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Finding the Fourth Proportional to 234,702.20, 351,479.12 and 211,957.40

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Solution

The fourth proportional to 234,702.20, 351,479.12 and 211,957.40 is: 317,417.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,702.20 : 351,479.12 = 211,957.40 : x
  2. Step 2: Convert to fraction form
    234,702.20/351,479.12 = 211,957.40/x
  3. Step 3: Cross multiply
    234,702.20x = 351,479.12 × 211,957.40
  4. Step 4: Simplify right side
    234,702.20x = 74,498,597,612.31
  5. Step 5: Solve for x
    x = 74,498,597,612.31/234,702.20
  6. Step 6: Final answer
    x = 317,417.56

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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.