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Finding the Fourth Proportional to 478,660.23, 660,663.68 and 297,508.97

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Solution

The fourth proportional to 478,660.23, 660,663.68 and 297,508.97 is: 410,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,660.23 : 660,663.68 = 297,508.97 : x
  2. Step 2: Convert to fraction form
    478,660.23/660,663.68 = 297,508.97/x
  3. Step 3: Cross multiply
    478,660.23x = 660,663.68 × 297,508.97
  4. Step 4: Simplify right side
    478,660.23x = 196,553,373,348.64
  5. Step 5: Solve for x
    x = 196,553,373,348.64/478,660.23
  6. Step 6: Final answer
    x = 410,632.35

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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.