Home / 515,565.81-773,164.04-178,515.90

Finding the Fourth Proportional to 515,565.81, 773,164.04 and 178,515.90

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Solution

The fourth proportional to 515,565.81, 773,164.04 and 178,515.90 is: 267,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,565.81 : 773,164.04 = 178,515.90 : x
  2. Step 2: Convert to fraction form
    515,565.81/773,164.04 = 178,515.90/x
  3. Step 3: Cross multiply
    515,565.81x = 773,164.04 × 178,515.90
  4. Step 4: Simplify right side
    515,565.81x = 138,022,073,555.66
  5. Step 5: Solve for x
    x = 138,022,073,555.66/515,565.81
  6. Step 6: Final answer
    x = 267,709.90

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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.