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Finding the Fourth Proportional to 297,108.57, 445,702.56 and 86,743.47

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Solution

The fourth proportional to 297,108.57, 445,702.56 and 86,743.47 is: 130,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,108.57 : 445,702.56 = 86,743.47 : x
  2. Step 2: Convert to fraction form
    297,108.57/445,702.56 = 86,743.47/x
  3. Step 3: Cross multiply
    297,108.57x = 445,702.56 × 86,743.47
  4. Step 4: Simplify right side
    297,108.57x = 38,661,786,642.28
  5. Step 5: Solve for x
    x = 38,661,786,642.28/297,108.57
  6. Step 6: Final answer
    x = 130,126.80

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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.