Home / 209,375,660.60-288,940,549.78-115,298,555.96

Finding the Fourth Proportional to 209,375,660.60, 288,940,549.78 and 115,298,555.96

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Solution

The fourth proportional to 209,375,660.60, 288,940,549.78 and 115,298,555.96 is: 159,113,184.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,375,660.60 : 288,940,549.78 = 115,298,555.96 : x
  2. Step 2: Convert to fraction form
    209,375,660.60/288,940,549.78 = 115,298,555.96/x
  3. Step 3: Cross multiply
    209,375,660.60x = 288,940,549.78 × 115,298,555.96
  4. Step 4: Simplify right side
    209,375,660.60x = 33,314,428,148,788,972
  5. Step 5: Solve for x
    x = 33,314,428,148,788,972/209,375,660.60
  6. Step 6: Final answer
    x = 159,113,184.66

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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.