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Finding the Fourth Proportional to 393,726.18, 589,702.92 and 275,923.43

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Solution

The fourth proportional to 393,726.18, 589,702.92 and 275,923.43 is: 413,263.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,726.18 : 589,702.92 = 275,923.43 : x
  2. Step 2: Convert to fraction form
    393,726.18/589,702.92 = 275,923.43/x
  3. Step 3: Cross multiply
    393,726.18x = 589,702.92 × 275,923.43
  4. Step 4: Simplify right side
    393,726.18x = 162,712,849,418.90
  5. Step 5: Solve for x
    x = 162,712,849,418.90/393,726.18
  6. Step 6: Final answer
    x = 413,263.98

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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.