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Finding the Fourth Proportional to 311,527.93, 429,908.28 and 168,287.93

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Solution

The fourth proportional to 311,527.93, 429,908.28 and 168,287.93 is: 232,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,527.93 : 429,908.28 = 168,287.93 : x
  2. Step 2: Convert to fraction form
    311,527.93/429,908.28 = 168,287.93/x
  3. Step 3: Cross multiply
    311,527.93x = 429,908.28 × 168,287.93
  4. Step 4: Simplify right side
    311,527.93x = 72,348,374,531.06
  5. Step 5: Solve for x
    x = 72,348,374,531.06/311,527.93
  6. Step 6: Final answer
    x = 232,237.20

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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.