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Finding the Fourth Proportional to 292,016.94, 438,026.13 and 81,654.54

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Solution

The fourth proportional to 292,016.94, 438,026.13 and 81,654.54 is: 122,482.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,016.94 : 438,026.13 = 81,654.54 : x
  2. Step 2: Convert to fraction form
    292,016.94/438,026.13 = 81,654.54/x
  3. Step 3: Cross multiply
    292,016.94x = 438,026.13 × 81,654.54
  4. Step 4: Simplify right side
    292,016.94x = 35,766,822,153.13
  5. Step 5: Solve for x
    x = 35,766,822,153.13/292,016.94
  6. Step 6: Final answer
    x = 122,482.01

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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.