Home / 287,568,374.60-431,352,561.90-83,103,120.20

Finding the Fourth Proportional to 287,568,374.60, 431,352,561.90 and 83,103,120.20

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Solution

The fourth proportional to 287,568,374.60, 431,352,561.90 and 83,103,120.20 is: 124,654,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,568,374.60 : 431,352,561.90 = 83,103,120.20 : x
  2. Step 2: Convert to fraction form
    287,568,374.60/431,352,561.90 = 83,103,120.20/x
  3. Step 3: Cross multiply
    287,568,374.60x = 431,352,561.90 × 83,103,120.20
  4. Step 4: Simplify right side
    287,568,374.60x = 35,846,743,800,153,640
  5. Step 5: Solve for x
    x = 35,846,743,800,153,640/287,568,374.60
  6. Step 6: Final answer
    x = 124,654,680.30

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1.5x scale

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.