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Finding the Fourth Proportional to 250,478.61, 374,830.98 and 155,753.40

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Solution

The fourth proportional to 250,478.61, 374,830.98 and 155,753.40 is: 233,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,478.61 : 374,830.98 = 155,753.40 : x
  2. Step 2: Convert to fraction form
    250,478.61/374,830.98 = 155,753.40/x
  3. Step 3: Cross multiply
    250,478.61x = 374,830.98 × 155,753.40
  4. Step 4: Simplify right side
    250,478.61x = 58,381,199,560.33
  5. Step 5: Solve for x
    x = 58,381,199,560.33/250,478.61
  6. Step 6: Final answer
    x = 233,078.58

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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.