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Finding the Fourth Proportional to 257,486.67, 386,156.30 and 88,962.93

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Solution

The fourth proportional to 257,486.67, 386,156.30 and 88,962.93 is: 133,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,486.67 : 386,156.30 = 88,962.93 : x
  2. Step 2: Convert to fraction form
    257,486.67/386,156.30 = 88,962.93/x
  3. Step 3: Cross multiply
    257,486.67x = 386,156.30 × 88,962.93
  4. Step 4: Simplify right side
    257,486.67x = 34,353,595,441.14
  5. Step 5: Solve for x
    x = 34,353,595,441.14/257,486.67
  6. Step 6: Final answer
    x = 133,418.93

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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.