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Finding the Fourth Proportional to 281,487.08, 388,355.70 and 160,541.42

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Solution

The fourth proportional to 281,487.08, 388,355.70 and 160,541.42 is: 221,492.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,487.08 : 388,355.70 = 160,541.42 : x
  2. Step 2: Convert to fraction form
    281,487.08/388,355.70 = 160,541.42/x
  3. Step 3: Cross multiply
    281,487.08x = 388,355.70 × 160,541.42
  4. Step 4: Simplify right side
    281,487.08x = 62,347,175,543.09
  5. Step 5: Solve for x
    x = 62,347,175,543.09/281,487.08
  6. Step 6: Final answer
    x = 221,492.14

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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.