Home / 218,210,652,032.30-327,315,978,048.45-128,948,971,366.70

Finding the Fourth Proportional to 218,210,652,032.30, 327,315,978,048.45 and 128,948,971,366.70

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Solution

The fourth proportional to 218,210,652,032.30, 327,315,978,048.45 and 128,948,971,366.70 is: 193,423,457,050.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,210,652,032.30 : 327,315,978,048.45 = 128,948,971,366.70 : x
  2. Step 2: Convert to fraction form
    218,210,652,032.30/327,315,978,048.45 = 128,948,971,366.70/x
  3. Step 3: Cross multiply
    218,210,652,032.30x = 327,315,978,048.45 × 128,948,971,366.70
  4. Step 4: Simplify right side
    218,210,652,032.30x = 42,207,058,681,232,982,278,144
  5. Step 5: Solve for x
    x = 42,207,058,681,232,982,278,144/218,210,652,032.30
  6. Step 6: Final answer
    x = 193,423,457,050.05

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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.