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Finding the Fourth Proportional to 281,285.70, 388,154.79 and 160,432.14

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Solution

The fourth proportional to 281,285.70, 388,154.79 and 160,432.14 is: 221,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,285.70 : 388,154.79 = 160,432.14 : x
  2. Step 2: Convert to fraction form
    281,285.70/388,154.79 = 160,432.14/x
  3. Step 3: Cross multiply
    281,285.70x = 388,154.79 × 160,432.14
  4. Step 4: Simplify right side
    281,285.70x = 62,272,503,610.95
  5. Step 5: Solve for x
    x = 62,272,503,610.95/281,285.70
  6. Step 6: Final answer
    x = 221,385.25

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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.