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Finding the Fourth Proportional to 438,729.99, 657,964.20 and 186,006.42

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Solution

The fourth proportional to 438,729.99, 657,964.20 and 186,006.42 is: 278,954.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,729.99 : 657,964.20 = 186,006.42 : x
  2. Step 2: Convert to fraction form
    438,729.99/657,964.20 = 186,006.42/x
  3. Step 3: Cross multiply
    438,729.99x = 657,964.20 × 186,006.42
  4. Step 4: Simplify right side
    438,729.99x = 122,385,565,330.16
  5. Step 5: Solve for x
    x = 122,385,565,330.16/438,729.99
  6. Step 6: Final answer
    x = 278,954.18

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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.