Home / 259,330.60-388,995.90-72,342.10

Finding the Fourth Proportional to 259,330.60, 388,995.90 and 72,342.10

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Solution

The fourth proportional to 259,330.60, 388,995.90 and 72,342.10 is: 108,513.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,330.60 : 388,995.90 = 72,342.10 : x
  2. Step 2: Convert to fraction form
    259,330.60/388,995.90 = 72,342.10/x
  3. Step 3: Cross multiply
    259,330.60x = 388,995.90 × 72,342.10
  4. Step 4: Simplify right side
    259,330.60x = 28,140,780,297.39
  5. Step 5: Solve for x
    x = 28,140,780,297.39/259,330.60
  6. Step 6: Final answer
    x = 108,513.15

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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.