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Finding the Fourth Proportional to 292,372.20, 438,339.60 and 159,402.60

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Solution

The fourth proportional to 292,372.20, 438,339.60 and 159,402.60 is: 238,984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,372.20 : 438,339.60 = 159,402.60 : x
  2. Step 2: Convert to fraction form
    292,372.20/438,339.60 = 159,402.60/x
  3. Step 3: Cross multiply
    292,372.20x = 438,339.60 × 159,402.60
  4. Step 4: Simplify right side
    292,372.20x = 69,872,471,922.96
  5. Step 5: Solve for x
    x = 69,872,471,922.96/292,372.20
  6. Step 6: Final answer
    x = 238,984.66

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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.