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Finding the Fourth Proportional to 318,616.39, 439,687.20 and 175,373.38

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Solution

The fourth proportional to 318,616.39, 439,687.20 and 175,373.38 is: 242,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,616.39 : 439,687.20 = 175,373.38 : x
  2. Step 2: Convert to fraction form
    318,616.39/439,687.20 = 175,373.38/x
  3. Step 3: Cross multiply
    318,616.39x = 439,687.20 × 175,373.38
  4. Step 4: Simplify right side
    318,616.39x = 77,109,430,406.74
  5. Step 5: Solve for x
    x = 77,109,430,406.74/318,616.39
  6. Step 6: Final answer
    x = 242,013.38

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1.5x scale

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.