Home / 207,992,449.18-287,029,514.55-115,172,932.42

Finding the Fourth Proportional to 207,992,449.18, 287,029,514.55 and 115,172,932.42

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Solution

The fourth proportional to 207,992,449.18, 287,029,514.55 and 115,172,932.42 is: 158,938,610.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,992,449.18 : 287,029,514.55 = 115,172,932.42 : x
  2. Step 2: Convert to fraction form
    207,992,449.18/287,029,514.55 = 115,172,932.42/x
  3. Step 3: Cross multiply
    207,992,449.18x = 287,029,514.55 × 115,172,932.42
  4. Step 4: Simplify right side
    207,992,449.18x = 33,058,030,881,812,560
  5. Step 5: Solve for x
    x = 33,058,030,881,812,560/207,992,449.18
  6. Step 6: Final answer
    x = 158,938,610.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.