Home / 209,278,998.54-288,802,726.16-115,191,133.88

Finding the Fourth Proportional to 209,278,998.54, 288,802,726.16 and 115,191,133.88

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Solution

The fourth proportional to 209,278,998.54, 288,802,726.16 and 115,191,133.88 is: 158,962,503.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,278,998.54 : 288,802,726.16 = 115,191,133.88 : x
  2. Step 2: Convert to fraction form
    209,278,998.54/288,802,726.16 = 115,191,133.88/x
  3. Step 3: Cross multiply
    209,278,998.54x = 288,802,726.16 × 115,191,133.88
  4. Step 4: Simplify right side
    209,278,998.54x = 33,267,513,491,985,564
  5. Step 5: Solve for x
    x = 33,267,513,491,985,564/209,278,998.54
  6. Step 6: Final answer
    x = 158,962,503.28

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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.