Home / 209,885,647.67-289,643,200.07-115,799,789.55

Finding the Fourth Proportional to 209,885,647.67, 289,643,200.07 and 115,799,789.55

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Solution

The fourth proportional to 209,885,647.67, 289,643,200.07 and 115,799,789.55 is: 159,804,264.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,885,647.67 : 289,643,200.07 = 115,799,789.55 : x
  2. Step 2: Convert to fraction form
    209,885,647.67/289,643,200.07 = 115,799,789.55/x
  3. Step 3: Cross multiply
    209,885,647.67x = 289,643,200.07 × 115,799,789.55
  4. Step 4: Simplify right side
    209,885,647.67x = 33,540,621,612,115,544
  5. Step 5: Solve for x
    x = 33,540,621,612,115,544/209,885,647.67
  6. Step 6: Final answer
    x = 159,804,264.78

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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.