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Finding the Fourth Proportional to 487,308.47, 672,307.22 and 293,758.97

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Solution

The fourth proportional to 487,308.47, 672,307.22 and 293,758.97 is: 405,279.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,308.47 : 672,307.22 = 293,758.97 : x
  2. Step 2: Convert to fraction form
    487,308.47/672,307.22 = 293,758.97/x
  3. Step 3: Cross multiply
    487,308.47x = 672,307.22 × 293,758.97
  4. Step 4: Simplify right side
    487,308.47x = 197,496,273,843.63
  5. Step 5: Solve for x
    x = 197,496,273,843.63/487,308.47
  6. Step 6: Final answer
    x = 405,279.79

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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.