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Finding the Fourth Proportional to 292,752.56, 439,128.94 and 82,390.48

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Solution

The fourth proportional to 292,752.56, 439,128.94 and 82,390.48 is: 123,585.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,752.56 : 439,128.94 = 82,390.48 : x
  2. Step 2: Convert to fraction form
    292,752.56/439,128.94 = 82,390.48/x
  3. Step 3: Cross multiply
    292,752.56x = 439,128.94 × 82,390.48
  4. Step 4: Simplify right side
    292,752.56x = 36,180,044,148.49
  5. Step 5: Solve for x
    x = 36,180,044,148.49/292,752.56
  6. Step 6: Final answer
    x = 123,585.75

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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.