Home / 354,386.16-531,423.27-129,688.20

Finding the Fourth Proportional to 354,386.16, 531,423.27 and 129,688.20

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Solution

The fourth proportional to 354,386.16, 531,423.27 and 129,688.20 is: 194,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,386.16 : 531,423.27 = 129,688.20 : x
  2. Step 2: Convert to fraction form
    354,386.16/531,423.27 = 129,688.20/x
  3. Step 3: Cross multiply
    354,386.16x = 531,423.27 × 129,688.20
  4. Step 4: Simplify right side
    354,386.16x = 68,919,327,324.41
  5. Step 5: Solve for x
    x = 68,919,327,324.41/354,386.16
  6. Step 6: Final answer
    x = 194,475.22

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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.