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Finding the Fourth Proportional to 386,294.72, 579,107.04 and 149,474.40

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Solution

The fourth proportional to 386,294.72, 579,107.04 and 149,474.40 is: 224,081.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,294.72 : 579,107.04 = 149,474.40 : x
  2. Step 2: Convert to fraction form
    386,294.72/579,107.04 = 149,474.40/x
  3. Step 3: Cross multiply
    386,294.72x = 579,107.04 × 149,474.40
  4. Step 4: Simplify right side
    386,294.72x = 86,561,677,339.78
  5. Step 5: Solve for x
    x = 86,561,677,339.78/386,294.72
  6. Step 6: Final answer
    x = 224,081.96

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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.