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Finding the Fourth Proportional to 292,752.83, 439,129.28 and 82,390.77

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Solution

The fourth proportional to 292,752.83, 439,129.28 and 82,390.77 is: 123,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,752.83 : 439,129.28 = 82,390.77 : x
  2. Step 2: Convert to fraction form
    292,752.83/439,129.28 = 82,390.77/x
  3. Step 3: Cross multiply
    292,752.83x = 439,129.28 × 82,390.77
  4. Step 4: Simplify right side
    292,752.83x = 36,180,199,714.72
  5. Step 5: Solve for x
    x = 36,180,199,714.72/292,752.83
  6. Step 6: Final answer
    x = 123,586.16

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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.