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Finding the Fourth Proportional to 393,274.79, 589,373.96 and 297,132.95

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Solution

The fourth proportional to 393,274.79, 589,373.96 and 297,132.95 is: 445,292.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,274.79 : 589,373.96 = 297,132.95 : x
  2. Step 2: Convert to fraction form
    393,274.79/589,373.96 = 297,132.95/x
  3. Step 3: Cross multiply
    393,274.79x = 589,373.96 × 297,132.95
  4. Step 4: Simplify right side
    393,274.79x = 175,122,423,375.75
  5. Step 5: Solve for x
    x = 175,122,423,375.75/393,274.79
  6. Step 6: Final answer
    x = 445,292.78

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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.