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Finding the Fourth Proportional to 318,776.28, 439,911.30 and 175,535.94

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Solution

The fourth proportional to 318,776.28, 439,911.30 and 175,535.94 is: 242,239.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,776.28 : 439,911.30 = 175,535.94 : x
  2. Step 2: Convert to fraction form
    318,776.28/439,911.30 = 175,535.94/x
  3. Step 3: Cross multiply
    318,776.28x = 439,911.30 × 175,535.94
  4. Step 4: Simplify right side
    318,776.28x = 77,220,243,562.12
  5. Step 5: Solve for x
    x = 77,220,243,562.12/318,776.28
  6. Step 6: Final answer
    x = 242,239.62

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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.