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Finding the Fourth Proportional to 310,956.59, 465,500.46 and 278,474.93

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Solution

The fourth proportional to 310,956.59, 465,500.46 and 278,474.93 is: 416,875.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,956.59 : 465,500.46 = 278,474.93 : x
  2. Step 2: Convert to fraction form
    310,956.59/465,500.46 = 278,474.93/x
  3. Step 3: Cross multiply
    310,956.59x = 465,500.46 × 278,474.93
  4. Step 4: Simplify right side
    310,956.59x = 129,630,205,685.97
  5. Step 5: Solve for x
    x = 129,630,205,685.97/310,956.59
  6. Step 6: Final answer
    x = 416,875.58

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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.