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Finding the Fourth Proportional to 316,711,978.35, 475,067,017.09 and 80,361,042.40

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Solution

The fourth proportional to 316,711,978.35, 475,067,017.09 and 80,361,042.40 is: 120,541,322.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,711,978.35 : 475,067,017.09 = 80,361,042.40 : x
  2. Step 2: Convert to fraction form
    316,711,978.35/475,067,017.09 = 80,361,042.40/x
  3. Step 3: Cross multiply
    316,711,978.35x = 475,067,017.09 × 80,361,042.40
  4. Step 4: Simplify right side
    316,711,978.35x = 38,176,880,703,211,016
  5. Step 5: Solve for x
    x = 38,176,880,703,211,016/316,711,978.35
  6. Step 6: Final answer
    x = 120,541,322.44

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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.