Home / 316,388.20-474,306.78-129,280.36

Finding the Fourth Proportional to 316,388.20, 474,306.78 and 129,280.36

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Solution

The fourth proportional to 316,388.20, 474,306.78 and 129,280.36 is: 193,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,388.20 : 474,306.78 = 129,280.36 : x
  2. Step 2: Convert to fraction form
    316,388.20/474,306.78 = 129,280.36/x
  3. Step 3: Cross multiply
    316,388.20x = 474,306.78 × 129,280.36
  4. Step 4: Simplify right side
    316,388.20x = 61,318,551,268.84
  5. Step 5: Solve for x
    x = 61,318,551,268.84/316,388.20
  6. Step 6: Final answer
    x = 193,807.96

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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.