Home / 287,472,015.80-431,208,023.70-114,863,478.20

Finding the Fourth Proportional to 287,472,015.80, 431,208,023.70 and 114,863,478.20

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Solution

The fourth proportional to 287,472,015.80, 431,208,023.70 and 114,863,478.20 is: 172,295,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,472,015.80 : 431,208,023.70 = 114,863,478.20 : x
  2. Step 2: Convert to fraction form
    287,472,015.80/431,208,023.70 = 114,863,478.20/x
  3. Step 3: Cross multiply
    287,472,015.80x = 431,208,023.70 × 114,863,478.20
  4. Step 4: Simplify right side
    287,472,015.80x = 49,530,053,429,930,032
  5. Step 5: Solve for x
    x = 49,530,053,429,930,032/287,472,015.80
  6. Step 6: Final answer
    x = 172,295,217.30

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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.