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Finding the Fourth Proportional to 438,729.99, 657,674.61 and 185,662.39

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Solution

The fourth proportional to 438,729.99, 657,674.61 and 185,662.39 is: 278,315.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,729.99 : 657,674.61 = 185,662.39 : x
  2. Step 2: Convert to fraction form
    438,729.99/657,674.61 = 185,662.39/x
  3. Step 3: Cross multiply
    438,729.99x = 657,674.61 × 185,662.39
  4. Step 4: Simplify right side
    438,729.99x = 122,105,439,006.61
  5. Step 5: Solve for x
    x = 122,105,439,006.61/438,729.99
  6. Step 6: Final answer
    x = 278,315.69

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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.