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Finding the Fourth Proportional to 243,144.26, 335,716.88 and 157,154.16

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Solution

The fourth proportional to 243,144.26, 335,716.88 and 157,154.16 is: 216,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,144.26 : 335,716.88 = 157,154.16 : x
  2. Step 2: Convert to fraction form
    243,144.26/335,716.88 = 157,154.16/x
  3. Step 3: Cross multiply
    243,144.26x = 335,716.88 × 157,154.16
  4. Step 4: Simplify right side
    243,144.26x = 52,759,304,274.22
  5. Step 5: Solve for x
    x = 52,759,304,274.22/243,144.26
  6. Step 6: Final answer
    x = 216,987.66

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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.