Home / 313,258,672.80-469,888,009.20-190,814,666.40

Finding the Fourth Proportional to 313,258,672.80, 469,888,009.20 and 190,814,666.40

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Solution

The fourth proportional to 313,258,672.80, 469,888,009.20 and 190,814,666.40 is: 286,221,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,258,672.80 : 469,888,009.20 = 190,814,666.40 : x
  2. Step 2: Convert to fraction form
    313,258,672.80/469,888,009.20 = 190,814,666.40/x
  3. Step 3: Cross multiply
    313,258,672.80x = 469,888,009.20 × 190,814,666.40
  4. Step 4: Simplify right side
    313,258,672.80x = 89,661,523,720,858,128
  5. Step 5: Solve for x
    x = 89,661,523,720,858,128/313,258,672.80
  6. Step 6: Final answer
    x = 286,221,999.60

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1.5x scale

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.