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Finding the Fourth Proportional to 318,774.66, 439,911.90 and 175,535.28

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Solution

The fourth proportional to 318,774.66, 439,911.90 and 175,535.28 is: 242,240.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,774.66 : 439,911.90 = 175,535.28 : x
  2. Step 2: Convert to fraction form
    318,774.66/439,911.90 = 175,535.28/x
  3. Step 3: Cross multiply
    318,774.66x = 439,911.90 × 175,535.28
  4. Step 4: Simplify right side
    318,774.66x = 77,220,058,541.83
  5. Step 5: Solve for x
    x = 77,220,058,541.83/318,774.66
  6. Step 6: Final answer
    x = 242,240.27

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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.