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Finding the Fourth Proportional to 305,587.18, 421,706.86 and 169,622.30

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Solution

The fourth proportional to 305,587.18, 421,706.86 and 169,622.30 is: 234,076.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,587.18 : 421,706.86 = 169,622.30 : x
  2. Step 2: Convert to fraction form
    305,587.18/421,706.86 = 169,622.30/x
  3. Step 3: Cross multiply
    305,587.18x = 421,706.86 × 169,622.30
  4. Step 4: Simplify right side
    305,587.18x = 71,530,888,149.19
  5. Step 5: Solve for x
    x = 71,530,888,149.19/305,587.18
  6. Step 6: Final answer
    x = 234,076.86

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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.