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Finding the Fourth Proportional to 487,190.30, 730,769.04 and 171,639

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Solution

The fourth proportional to 487,190.30, 730,769.04 and 171,639 is: 257,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,190.30 : 730,769.04 = 171,639 : x
  2. Step 2: Convert to fraction form
    487,190.30/730,769.04 = 171,639/x
  3. Step 3: Cross multiply
    487,190.30x = 730,769.04 × 171,639
  4. Step 4: Simplify right side
    487,190.30x = 125,428,467,256.56
  5. Step 5: Solve for x
    x = 125,428,467,256.56/487,190.30
  6. Step 6: Final answer
    x = 257,452.72

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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.