Home / 218,210,652,030.80-327,315,978,046.20-128,948,971,365.20

Finding the Fourth Proportional to 218,210,652,030.80, 327,315,978,046.20 and 128,948,971,365.20

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Solution

The fourth proportional to 218,210,652,030.80, 327,315,978,046.20 and 128,948,971,365.20 is: 193,423,457,047.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,210,652,030.80 : 327,315,978,046.20 = 128,948,971,365.20 : x
  2. Step 2: Convert to fraction form
    218,210,652,030.80/327,315,978,046.20 = 128,948,971,365.20/x
  3. Step 3: Cross multiply
    218,210,652,030.80x = 327,315,978,046.20 × 128,948,971,365.20
  4. Step 4: Simplify right side
    218,210,652,030.80x = 42,207,058,680,451,877,044,224
  5. Step 5: Solve for x
    x = 42,207,058,680,451,877,044,224/218,210,652,030.80
  6. Step 6: Final answer
    x = 193,423,457,047.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.