Home / 261,730.98-392,633.19-128,616.48

Finding the Fourth Proportional to 261,730.98, 392,633.19 and 128,616.48

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Solution

The fourth proportional to 261,730.98, 392,633.19 and 128,616.48 is: 192,942.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,730.98 : 392,633.19 = 128,616.48 : x
  2. Step 2: Convert to fraction form
    261,730.98/392,633.19 = 128,616.48/x
  3. Step 3: Cross multiply
    261,730.98x = 392,633.19 × 128,616.48
  4. Step 4: Simplify right side
    261,730.98x = 50,499,098,828.97
  5. Step 5: Solve for x
    x = 50,499,098,828.97/261,730.98
  6. Step 6: Final answer
    x = 192,942.76

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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.