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Finding the Fourth Proportional to 292,408.60, 438,612.90 and 187,432.60

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Solution

The fourth proportional to 292,408.60, 438,612.90 and 187,432.60 is: 281,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,408.60 : 438,612.90 = 187,432.60 : x
  2. Step 2: Convert to fraction form
    292,408.60/438,612.90 = 187,432.60/x
  3. Step 3: Cross multiply
    292,408.60x = 438,612.90 × 187,432.60
  4. Step 4: Simplify right side
    292,408.60x = 82,210,356,240.54
  5. Step 5: Solve for x
    x = 82,210,356,240.54/292,408.60
  6. Step 6: Final answer
    x = 281,148.90

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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.