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Finding the Fourth Proportional to 281,370.53, 388,328.31 and 160,484.12

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Solution

The fourth proportional to 281,370.53, 388,328.31 and 160,484.12 is: 221,489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,370.53 : 388,328.31 = 160,484.12 : x
  2. Step 2: Convert to fraction form
    281,370.53/388,328.31 = 160,484.12/x
  3. Step 3: Cross multiply
    281,370.53x = 388,328.31 × 160,484.12
  4. Step 4: Simplify right side
    281,370.53x = 62,320,527,101.44
  5. Step 5: Solve for x
    x = 62,320,527,101.44/281,370.53
  6. Step 6: Final answer
    x = 221,489.18

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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.