Home / 642,079.30-962,892.15-221,257.30

Finding the Fourth Proportional to 642,079.30, 962,892.15 and 221,257.30

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Solution

The fourth proportional to 642,079.30, 962,892.15 and 221,257.30 is: 331,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,079.30 : 962,892.15 = 221,257.30 : x
  2. Step 2: Convert to fraction form
    642,079.30/962,892.15 = 221,257.30/x
  3. Step 3: Cross multiply
    642,079.30x = 962,892.15 × 221,257.30
  4. Step 4: Simplify right side
    642,079.30x = 213,046,917,300.20
  5. Step 5: Solve for x
    x = 213,046,917,300.20/642,079.30
  6. Step 6: Final answer
    x = 331,807.80

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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.