Home / 259,775.42-389,685.22-91,281.18

Finding the Fourth Proportional to 259,775.42, 389,685.22 and 91,281.18

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Solution

The fourth proportional to 259,775.42, 389,685.22 and 91,281.18 is: 136,929.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,775.42 : 389,685.22 = 91,281.18 : x
  2. Step 2: Convert to fraction form
    259,775.42/389,685.22 = 91,281.18/x
  3. Step 3: Cross multiply
    259,775.42x = 389,685.22 × 91,281.18
  4. Step 4: Simplify right side
    259,775.42x = 35,570,927,943.28
  5. Step 5: Solve for x
    x = 35,570,927,943.28/259,775.42
  6. Step 6: Final answer
    x = 136,929.54

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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.