Home / 287,418,910.74-431,164,220.61-112,519,352.60

Finding the Fourth Proportional to 287,418,910.74, 431,164,220.61 and 112,519,352.60

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Solution

The fourth proportional to 287,418,910.74, 431,164,220.61 and 112,519,352.60 is: 168,793,065.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,418,910.74 : 431,164,220.61 = 112,519,352.60 : x
  2. Step 2: Convert to fraction form
    287,418,910.74/431,164,220.61 = 112,519,352.60/x
  3. Step 3: Cross multiply
    287,418,910.74x = 431,164,220.61 × 112,519,352.60
  4. Step 4: Simplify right side
    287,418,910.74x = 48,514,318,965,164,960
  5. Step 5: Solve for x
    x = 48,514,318,965,164,960/287,418,910.74
  6. Step 6: Final answer
    x = 168,793,065.29

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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.