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Finding the Fourth Proportional to 281,264.40, 388,147.14 and 153,941.04

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Solution

The fourth proportional to 281,264.40, 388,147.14 and 153,941.04 is: 212,439.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,264.40 : 388,147.14 = 153,941.04 : x
  2. Step 2: Convert to fraction form
    281,264.40/388,147.14 = 153,941.04/x
  3. Step 3: Cross multiply
    281,264.40x = 388,147.14 × 153,941.04
  4. Step 4: Simplify right side
    281,264.40x = 59,751,774,404.63
  5. Step 5: Solve for x
    x = 59,751,774,404.63/281,264.40
  6. Step 6: Final answer
    x = 212,439.88

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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.