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Finding the Fourth Proportional to 389,554.38, 584,324.28 and 123,330.87

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Solution

The fourth proportional to 389,554.38, 584,324.28 and 123,330.87 is: 184,994.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,554.38 : 584,324.28 = 123,330.87 : x
  2. Step 2: Convert to fraction form
    389,554.38/584,324.28 = 123,330.87/x
  3. Step 3: Cross multiply
    389,554.38x = 584,324.28 × 123,330.87
  4. Step 4: Simplify right side
    389,554.38x = 72,065,221,814.52
  5. Step 5: Solve for x
    x = 72,065,221,814.52/389,554.38
  6. Step 6: Final answer
    x = 184,994.00

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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.