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Finding the Fourth Proportional to 281,073.20, 421,681.80 and 162,532.40

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Solution

The fourth proportional to 281,073.20, 421,681.80 and 162,532.40 is: 243,840.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,073.20 : 421,681.80 = 162,532.40 : x
  2. Step 2: Convert to fraction form
    281,073.20/421,681.80 = 162,532.40/x
  3. Step 3: Cross multiply
    281,073.20x = 421,681.80 × 162,532.40
  4. Step 4: Simplify right side
    281,073.20x = 68,536,954,990.32
  5. Step 5: Solve for x
    x = 68,536,954,990.32/281,073.20
  6. Step 6: Final answer
    x = 243,840.23

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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.