Home / 345,139.28-517,945.36-120,499.74

Finding the Fourth Proportional to 345,139.28, 517,945.36 and 120,499.74

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Solution

The fourth proportional to 345,139.28, 517,945.36 and 120,499.74 is: 180,832.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,139.28 : 517,945.36 = 120,499.74 : x
  2. Step 2: Convert to fraction form
    345,139.28/517,945.36 = 120,499.74/x
  3. Step 3: Cross multiply
    345,139.28x = 517,945.36 × 120,499.74
  4. Step 4: Simplify right side
    345,139.28x = 62,412,281,214.21
  5. Step 5: Solve for x
    x = 62,412,281,214.21/345,139.28
  6. Step 6: Final answer
    x = 180,832.16

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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.