Home / 213,015,731.36-319,532,714.40-83,651,332.82

Finding the Fourth Proportional to 213,015,731.36, 319,532,714.40 and 83,651,332.82

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Solution

The fourth proportional to 213,015,731.36, 319,532,714.40 and 83,651,332.82 is: 125,480,579.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,015,731.36 : 319,532,714.40 = 83,651,332.82 : x
  2. Step 2: Convert to fraction form
    213,015,731.36/319,532,714.40 = 83,651,332.82/x
  3. Step 3: Cross multiply
    213,015,731.36x = 319,532,714.40 × 83,651,332.82
  4. Step 4: Simplify right side
    213,015,731.36x = 26,729,337,439,152,404
  5. Step 5: Solve for x
    x = 26,729,337,439,152,404/213,015,731.36
  6. Step 6: Final answer
    x = 125,480,579.62

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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.