Home / 261,731.98-392,634.69-128,617.48

Finding the Fourth Proportional to 261,731.98, 392,634.69 and 128,617.48

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Solution

The fourth proportional to 261,731.98, 392,634.69 and 128,617.48 is: 192,944.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,731.98 : 392,634.69 = 128,617.48 : x
  2. Step 2: Convert to fraction form
    261,731.98/392,634.69 = 128,617.48/x
  3. Step 3: Cross multiply
    261,731.98x = 392,634.69 × 128,617.48
  4. Step 4: Simplify right side
    261,731.98x = 50,499,684,388.38
  5. Step 5: Solve for x
    x = 50,499,684,388.38/261,731.98
  6. Step 6: Final answer
    x = 192,944.26

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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.