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Finding the Fourth Proportional to 318,656.52, 439,743.60 and 175,419

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Solution

The fourth proportional to 318,656.52, 439,743.60 and 175,419 is: 242,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,656.52 : 439,743.60 = 175,419 : x
  2. Step 2: Convert to fraction form
    318,656.52/439,743.60 = 175,419/x
  3. Step 3: Cross multiply
    318,656.52x = 439,743.60 × 175,419
  4. Step 4: Simplify right side
    318,656.52x = 77,139,382,568.40
  5. Step 5: Solve for x
    x = 77,139,382,568.40/318,656.52
  6. Step 6: Final answer
    x = 242,076.90

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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.