Home / 259,927,121.82-389,808,366.48-85,009,740.78

Finding the Fourth Proportional to 259,927,121.82, 389,808,366.48 and 85,009,740.78

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Solution

The fourth proportional to 259,927,121.82, 389,808,366.48 and 85,009,740.78 is: 127,487,689.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,927,121.82 : 389,808,366.48 = 85,009,740.78 : x
  2. Step 2: Convert to fraction form
    259,927,121.82/389,808,366.48 = 85,009,740.78/x
  3. Step 3: Cross multiply
    259,927,121.82x = 389,808,366.48 × 85,009,740.78
  4. Step 4: Simplify right side
    259,927,121.82x = 33,137,508,188,340,044
  5. Step 5: Solve for x
    x = 33,137,508,188,340,044/259,927,121.82
  6. Step 6: Final answer
    x = 127,487,689.46

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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.