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Finding the Fourth Proportional to 389,306.96, 583,959.48 and 93,818.96

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Solution

The fourth proportional to 389,306.96, 583,959.48 and 93,818.96 is: 140,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,306.96 : 583,959.48 = 93,818.96 : x
  2. Step 2: Convert to fraction form
    389,306.96/583,959.48 = 93,818.96/x
  3. Step 3: Cross multiply
    389,306.96x = 583,959.48 × 93,818.96
  4. Step 4: Simplify right side
    389,306.96x = 54,786,471,095.74
  5. Step 5: Solve for x
    x = 54,786,471,095.74/389,306.96
  6. Step 6: Final answer
    x = 140,728.21

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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.