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Finding the Fourth Proportional to 318,810.28, 439,958.28 and 175,569.88

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Solution

The fourth proportional to 318,810.28, 439,958.28 and 175,569.88 is: 242,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,810.28 : 439,958.28 = 175,569.88 : x
  2. Step 2: Convert to fraction form
    318,810.28/439,958.28 = 175,569.88/x
  3. Step 3: Cross multiply
    318,810.28x = 439,958.28 × 175,569.88
  4. Step 4: Simplify right side
    318,810.28x = 77,243,422,424.61
  5. Step 5: Solve for x
    x = 77,243,422,424.61/318,810.28
  6. Step 6: Final answer
    x = 242,286.49

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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.