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Finding the Fourth Proportional to 169,382,407.80, 254,073,611.70 and 165,981,185.40

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Solution

The fourth proportional to 169,382,407.80, 254,073,611.70 and 165,981,185.40 is: 248,971,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,382,407.80 : 254,073,611.70 = 165,981,185.40 : x
  2. Step 2: Convert to fraction form
    169,382,407.80/254,073,611.70 = 165,981,185.40/x
  3. Step 3: Cross multiply
    169,382,407.80x = 254,073,611.70 × 165,981,185.40
  4. Step 4: Simplify right side
    169,382,407.80x = 42,171,439,248,825,312
  5. Step 5: Solve for x
    x = 42,171,439,248,825,312/169,382,407.80
  6. Step 6: Final answer
    x = 248,971,778.10

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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.