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Finding the Fourth Proportional to 372,392.34, 558,452.43 and 135,664.98

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Solution

The fourth proportional to 372,392.34, 558,452.43 and 135,664.98 is: 203,447.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,392.34 : 558,452.43 = 135,664.98 : x
  2. Step 2: Convert to fraction form
    372,392.34/558,452.43 = 135,664.98/x
  3. Step 3: Cross multiply
    372,392.34x = 558,452.43 × 135,664.98
  4. Step 4: Simplify right side
    372,392.34x = 75,762,437,746.90
  5. Step 5: Solve for x
    x = 75,762,437,746.90/372,392.34
  6. Step 6: Final answer
    x = 203,447.90

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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.