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Finding the Fourth Proportional to 318,862.50, 440,061.30 and 238,149.88

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Solution

The fourth proportional to 318,862.50, 440,061.30 and 238,149.88 is: 328,670.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,862.50 : 440,061.30 = 238,149.88 : x
  2. Step 2: Convert to fraction form
    318,862.50/440,061.30 = 238,149.88/x
  3. Step 3: Cross multiply
    318,862.50x = 440,061.30 × 238,149.88
  4. Step 4: Simplify right side
    318,862.50x = 104,800,545,787.64
  5. Step 5: Solve for x
    x = 104,800,545,787.64/318,862.50
  6. Step 6: Final answer
    x = 328,670.02

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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.