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Finding the Fourth Proportional to 292,003.57, 438,005.76 and 81,641.31

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Solution

The fourth proportional to 292,003.57, 438,005.76 and 81,641.31 is: 122,462.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,003.57 : 438,005.76 = 81,641.31 : x
  2. Step 2: Convert to fraction form
    292,003.57/438,005.76 = 81,641.31/x
  3. Step 3: Cross multiply
    292,003.57x = 438,005.76 × 81,641.31
  4. Step 4: Simplify right side
    292,003.57x = 35,759,364,033.95
  5. Step 5: Solve for x
    x = 35,759,364,033.95/292,003.57
  6. Step 6: Final answer
    x = 122,462.08

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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.