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Finding the Fourth Proportional to 316,308.54, 474,463.12 and 129,320.04

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Solution

The fourth proportional to 316,308.54, 474,463.12 and 129,320.04 is: 193,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,308.54 : 474,463.12 = 129,320.04 : x
  2. Step 2: Convert to fraction form
    316,308.54/474,463.12 = 129,320.04/x
  3. Step 3: Cross multiply
    316,308.54x = 474,463.12 × 129,320.04
  4. Step 4: Simplify right side
    316,308.54x = 61,357,589,656.92
  5. Step 5: Solve for x
    x = 61,357,589,656.92/316,308.54
  6. Step 6: Final answer
    x = 193,980.19

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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.