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Finding the Fourth Proportional to 281,167.40, 421,751.28 and 114,955.40

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Solution

The fourth proportional to 281,167.40, 421,751.28 and 114,955.40 is: 172,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,167.40 : 421,751.28 = 114,955.40 : x
  2. Step 2: Convert to fraction form
    281,167.40/421,751.28 = 114,955.40/x
  3. Step 3: Cross multiply
    281,167.40x = 421,751.28 × 114,955.40
  4. Step 4: Simplify right side
    281,167.40x = 48,482,587,092.91
  5. Step 5: Solve for x
    x = 48,482,587,092.91/281,167.40
  6. Step 6: Final answer
    x = 172,433.17

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1.5x scale

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.