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Finding the Fourth Proportional to 281,707.48, 388,793.55 and 160,821.46

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Solution

The fourth proportional to 281,707.48, 388,793.55 and 160,821.46 is: 221,954.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,707.48 : 388,793.55 = 160,821.46 : x
  2. Step 2: Convert to fraction form
    281,707.48/388,793.55 = 160,821.46/x
  3. Step 3: Cross multiply
    281,707.48x = 388,793.55 × 160,821.46
  4. Step 4: Simplify right side
    281,707.48x = 62,526,346,349.58
  5. Step 5: Solve for x
    x = 62,526,346,349.58/281,707.48
  6. Step 6: Final answer
    x = 221,954.87

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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.