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Finding the Fourth Proportional to 177,717.40, 266,721.90 and 171,885.40

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Solution

The fourth proportional to 177,717.40, 266,721.90 and 171,885.40 is: 257,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,717.40 : 266,721.90 = 171,885.40 : x
  2. Step 2: Convert to fraction form
    177,717.40/266,721.90 = 171,885.40/x
  3. Step 3: Cross multiply
    177,717.40x = 266,721.90 × 171,885.40
  4. Step 4: Simplify right side
    177,717.40x = 45,845,600,470.26
  5. Step 5: Solve for x
    x = 45,845,600,470.26/177,717.40
  6. Step 6: Final answer
    x = 257,969.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.