Home / 316,320.40-474,480.60-129,288.16

Finding the Fourth Proportional to 316,320.40, 474,480.60 and 129,288.16

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Solution

The fourth proportional to 316,320.40, 474,480.60 and 129,288.16 is: 193,932.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,320.40 : 474,480.60 = 129,288.16 : x
  2. Step 2: Convert to fraction form
    316,320.40/474,480.60 = 129,288.16/x
  3. Step 3: Cross multiply
    316,320.40x = 474,480.60 × 129,288.16
  4. Step 4: Simplify right side
    316,320.40x = 61,344,723,729.70
  5. Step 5: Solve for x
    x = 61,344,723,729.70/316,320.40
  6. Step 6: Final answer
    x = 193,932.24

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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.