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Finding the Fourth Proportional to 305,587.78, 421,691.19 and 169,615.24

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Solution

The fourth proportional to 305,587.78, 421,691.19 and 169,615.24 is: 234,057.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,587.78 : 421,691.19 = 169,615.24 : x
  2. Step 2: Convert to fraction form
    305,587.78/421,691.19 = 169,615.24/x
  3. Step 3: Cross multiply
    305,587.78x = 421,691.19 × 169,615.24
  4. Step 4: Simplify right side
    305,587.78x = 71,525,252,397.74
  5. Step 5: Solve for x
    x = 71,525,252,397.74/305,587.78
  6. Step 6: Final answer
    x = 234,057.96

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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.