Home / 287,472,489.80-431,208,734.70-114,863,952.20

Finding the Fourth Proportional to 287,472,489.80, 431,208,734.70 and 114,863,952.20

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Solution

The fourth proportional to 287,472,489.80, 431,208,734.70 and 114,863,952.20 is: 172,295,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,472,489.80 : 431,208,734.70 = 114,863,952.20 : x
  2. Step 2: Convert to fraction form
    287,472,489.80/431,208,734.70 = 114,863,952.20/x
  3. Step 3: Cross multiply
    287,472,489.80x = 431,208,734.70 × 114,863,952.20
  4. Step 4: Simplify right side
    287,472,489.80x = 49,530,339,490,803,280
  5. Step 5: Solve for x
    x = 49,530,339,490,803,280/287,472,489.80
  6. Step 6: Final answer
    x = 172,295,928.30

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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.