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Finding the Fourth Proportional to 281,981.80, 423,069.90 and 124,323.40

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Solution

The fourth proportional to 281,981.80, 423,069.90 and 124,323.40 is: 186,527.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,981.80 : 423,069.90 = 124,323.40 : x
  2. Step 2: Convert to fraction form
    281,981.80/423,069.90 = 124,323.40/x
  3. Step 3: Cross multiply
    281,981.80x = 423,069.90 × 124,323.40
  4. Step 4: Simplify right side
    281,981.80x = 52,597,488,405.66
  5. Step 5: Solve for x
    x = 52,597,488,405.66/281,981.80
  6. Step 6: Final answer
    x = 186,527.95

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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.