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Finding the Fourth Proportional to 292,077.40, 438,083.70 and 81,736.60

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Solution

The fourth proportional to 292,077.40, 438,083.70 and 81,736.60 is: 122,595.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,077.40 : 438,083.70 = 81,736.60 : x
  2. Step 2: Convert to fraction form
    292,077.40/438,083.70 = 81,736.60/x
  3. Step 3: Cross multiply
    292,077.40x = 438,083.70 × 81,736.60
  4. Step 4: Simplify right side
    292,077.40x = 35,807,472,153.42
  5. Step 5: Solve for x
    x = 35,807,472,153.42/292,077.40
  6. Step 6: Final answer
    x = 122,595.83

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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.