Home / 485,936.71-728,922.15-130,959.21

Finding the Fourth Proportional to 485,936.71, 728,922.15 and 130,959.21

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Solution

The fourth proportional to 485,936.71, 728,922.15 and 130,959.21 is: 196,443.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,936.71 : 728,922.15 = 130,959.21 : x
  2. Step 2: Convert to fraction form
    485,936.71/728,922.15 = 130,959.21/x
  3. Step 3: Cross multiply
    485,936.71x = 728,922.15 × 130,959.21
  4. Step 4: Simplify right side
    485,936.71x = 95,459,068,915.50
  5. Step 5: Solve for x
    x = 95,459,068,915.50/485,936.71
  6. Step 6: Final answer
    x = 196,443.42

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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.