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Finding the Fourth Proportional to 487,459.92, 672,663.78 and 269,662.80

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Solution

The fourth proportional to 487,459.92, 672,663.78 and 269,662.80 is: 372,117.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,459.92 : 672,663.78 = 269,662.80 : x
  2. Step 2: Convert to fraction form
    487,459.92/672,663.78 = 269,662.80/x
  3. Step 3: Cross multiply
    487,459.92x = 672,663.78 × 269,662.80
  4. Step 4: Simplify right side
    487,459.92x = 181,392,398,373.38
  5. Step 5: Solve for x
    x = 181,392,398,373.38/487,459.92
  6. Step 6: Final answer
    x = 372,117.56

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1.5x scale

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.