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Finding the Fourth Proportional to 354,651.40, 532,025.70 and 129,957.40

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Solution

The fourth proportional to 354,651.40, 532,025.70 and 129,957.40 is: 194,953.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,651.40 : 532,025.70 = 129,957.40 : x
  2. Step 2: Convert to fraction form
    354,651.40/532,025.70 = 129,957.40/x
  3. Step 3: Cross multiply
    354,651.40x = 532,025.70 × 129,957.40
  4. Step 4: Simplify right side
    354,651.40x = 69,140,676,705.18
  5. Step 5: Solve for x
    x = 69,140,676,705.18/354,651.40
  6. Step 6: Final answer
    x = 194,953.91

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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.