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Finding the Fourth Proportional to 292,487.12, 438,440.03 and 203,553.78

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Solution

The fourth proportional to 292,487.12, 438,440.03 and 203,553.78 is: 305,128.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,487.12 : 438,440.03 = 203,553.78 : x
  2. Step 2: Convert to fraction form
    292,487.12/438,440.03 = 203,553.78/x
  3. Step 3: Cross multiply
    292,487.12x = 438,440.03 × 203,553.78
  4. Step 4: Simplify right side
    292,487.12x = 89,246,125,155.37
  5. Step 5: Solve for x
    x = 89,246,125,155.37/292,487.12
  6. Step 6: Final answer
    x = 305,128.39

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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.