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Finding the Fourth Proportional to 281,500.78, 388,470.84 and 152,439.19

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Solution

The fourth proportional to 281,500.78, 388,470.84 and 152,439.19 is: 210,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,500.78 : 388,470.84 = 152,439.19 : x
  2. Step 2: Convert to fraction form
    281,500.78/388,470.84 = 152,439.19/x
  3. Step 3: Cross multiply
    281,500.78x = 388,470.84 × 152,439.19
  4. Step 4: Simplify right side
    281,500.78x = 59,218,180,188.22
  5. Step 5: Solve for x
    x = 59,218,180,188.22/281,500.78
  6. Step 6: Final answer
    x = 210,365.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.