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Finding the Fourth Proportional to 460,979.91, 636,105.69 and 257,011.68

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Solution

The fourth proportional to 460,979.91, 636,105.69 and 257,011.68 is: 354,650.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,979.91 : 636,105.69 = 257,011.68 : x
  2. Step 2: Convert to fraction form
    460,979.91/636,105.69 = 257,011.68/x
  3. Step 3: Cross multiply
    460,979.91x = 636,105.69 × 257,011.68
  4. Step 4: Simplify right side
    460,979.91x = 163,486,592,044.46
  5. Step 5: Solve for x
    x = 163,486,592,044.46/460,979.91
  6. Step 6: Final answer
    x = 354,650.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.