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Finding the Fourth Proportional to 318,657.62, 439,760.04 and 175,431

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Solution

The fourth proportional to 318,657.62, 439,760.04 and 175,431 is: 242,101.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,657.62 : 439,760.04 = 175,431 : x
  2. Step 2: Convert to fraction form
    318,657.62/439,760.04 = 175,431/x
  3. Step 3: Cross multiply
    318,657.62x = 439,760.04 × 175,431
  4. Step 4: Simplify right side
    318,657.62x = 77,147,543,577.24
  5. Step 5: Solve for x
    x = 77,147,543,577.24/318,657.62
  6. Step 6: Final answer
    x = 242,101.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.