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Finding the Fourth Proportional to 275,613.92, 380,366.00 and 153,120.66

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Solution

The fourth proportional to 275,613.92, 380,366.00 and 153,120.66 is: 211,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,613.92 : 380,366.00 = 153,120.66 : x
  2. Step 2: Convert to fraction form
    275,613.92/380,366.00 = 153,120.66/x
  3. Step 3: Cross multiply
    275,613.92x = 380,366.00 × 153,120.66
  4. Step 4: Simplify right side
    275,613.92x = 58,241,891,343.79
  5. Step 5: Solve for x
    x = 58,241,891,343.79/275,613.92
  6. Step 6: Final answer
    x = 211,316.95

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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.