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Finding the Fourth Proportional to 354,666.40, 532,048.20 and 129,972.40

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Solution

The fourth proportional to 354,666.40, 532,048.20 and 129,972.40 is: 194,976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,666.40 : 532,048.20 = 129,972.40 : x
  2. Step 2: Convert to fraction form
    354,666.40/532,048.20 = 129,972.40/x
  3. Step 3: Cross multiply
    354,666.40x = 532,048.20 × 129,972.40
  4. Step 4: Simplify right side
    354,666.40x = 69,151,581,469.68
  5. Step 5: Solve for x
    x = 69,151,581,469.68/354,666.40
  6. Step 6: Final answer
    x = 194,976.41

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1.5x scale

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.