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Finding the Fourth Proportional to 443,307.30, 665,058.18 and 143,818.17

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Solution

The fourth proportional to 443,307.30, 665,058.18 and 143,818.17 is: 215,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,307.30 : 665,058.18 = 143,818.17 : x
  2. Step 2: Convert to fraction form
    443,307.30/665,058.18 = 143,818.17/x
  3. Step 3: Cross multiply
    443,307.30x = 665,058.18 × 143,818.17
  4. Step 4: Simplify right side
    443,307.30x = 95,647,450,391.13
  5. Step 5: Solve for x
    x = 95,647,450,391.13/443,307.30
  6. Step 6: Final answer
    x = 215,758.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.