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Finding the Fourth Proportional to 221,062.54, 305,205.66 and 156,668.34

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Solution

The fourth proportional to 221,062.54, 305,205.66 and 156,668.34 is: 216,301.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,062.54 : 305,205.66 = 156,668.34 : x
  2. Step 2: Convert to fraction form
    221,062.54/305,205.66 = 156,668.34/x
  3. Step 3: Cross multiply
    221,062.54x = 305,205.66 × 156,668.34
  4. Step 4: Simplify right side
    221,062.54x = 47,816,064,110.80
  5. Step 5: Solve for x
    x = 47,816,064,110.80/221,062.54
  6. Step 6: Final answer
    x = 216,301.07

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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.