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Finding the Fourth Proportional to 292,234.95, 438,356.75 and 81,859.59

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Solution

The fourth proportional to 292,234.95, 438,356.75 and 81,859.59 is: 122,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,234.95 : 438,356.75 = 81,859.59 : x
  2. Step 2: Convert to fraction form
    292,234.95/438,356.75 = 81,859.59/x
  3. Step 3: Cross multiply
    292,234.95x = 438,356.75 × 81,859.59
  4. Step 4: Simplify right side
    292,234.95x = 35,883,703,419.43
  5. Step 5: Solve for x
    x = 35,883,703,419.43/292,234.95
  6. Step 6: Final answer
    x = 122,790.60

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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.