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Finding the Fourth Proportional to 281,126.64, 387,963.96 and 153,799.28

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Solution

The fourth proportional to 281,126.64, 387,963.96 and 153,799.28 is: 212,248.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,126.64 : 387,963.96 = 153,799.28 : x
  2. Step 2: Convert to fraction form
    281,126.64/387,963.96 = 153,799.28/x
  3. Step 3: Cross multiply
    281,126.64x = 387,963.96 × 153,799.28
  4. Step 4: Simplify right side
    281,126.64x = 59,668,577,713.95
  5. Step 5: Solve for x
    x = 59,668,577,713.95/281,126.64
  6. Step 6: Final answer
    x = 212,248.04

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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.