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Finding the Fourth Proportional to 447,785.40, 671,663.70 and 148,279.80

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Solution

The fourth proportional to 447,785.40, 671,663.70 and 148,279.80 is: 222,414.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,785.40 : 671,663.70 = 148,279.80 : x
  2. Step 2: Convert to fraction form
    447,785.40/671,663.70 = 148,279.80/x
  3. Step 3: Cross multiply
    447,785.40x = 671,663.70 × 148,279.80
  4. Step 4: Simplify right side
    447,785.40x = 99,594,159,103.26
  5. Step 5: Solve for x
    x = 99,594,159,103.26/447,785.40
  6. Step 6: Final answer
    x = 222,414.93

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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.