Home / 259,547.40-389,321.10-82,108.80

Finding the Fourth Proportional to 259,547.40, 389,321.10 and 82,108.80

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Solution

The fourth proportional to 259,547.40, 389,321.10 and 82,108.80 is: 123,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,547.40 : 389,321.10 = 82,108.80 : x
  2. Step 2: Convert to fraction form
    259,547.40/389,321.10 = 82,108.80/x
  3. Step 3: Cross multiply
    259,547.40x = 389,321.10 × 82,108.80
  4. Step 4: Simplify right side
    259,547.40x = 31,966,688,335.68
  5. Step 5: Solve for x
    x = 31,966,688,335.68/259,547.40
  6. Step 6: Final answer
    x = 123,163.20

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1.5x scale

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.