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Finding the Fourth Proportional to 318,808.28, 439,955.52 and 175,567.88

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Solution

The fourth proportional to 318,808.28, 439,955.52 and 175,567.88 is: 242,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,808.28 : 439,955.52 = 175,567.88 : x
  2. Step 2: Convert to fraction form
    318,808.28/439,955.52 = 175,567.88/x
  3. Step 3: Cross multiply
    318,808.28x = 439,955.52 × 175,567.88
  4. Step 4: Simplify right side
    318,808.28x = 77,242,057,940.70
  5. Step 5: Solve for x
    x = 77,242,057,940.70/318,808.28
  6. Step 6: Final answer
    x = 242,283.73

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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.