Home / 391,904.73-540,943.52-255,959.29

Finding the Fourth Proportional to 391,904.73, 540,943.52 and 255,959.29

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Solution

The fourth proportional to 391,904.73, 540,943.52 and 255,959.29 is: 353,298.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,904.73 : 540,943.52 = 255,959.29 : x
  2. Step 2: Convert to fraction form
    391,904.73/540,943.52 = 255,959.29/x
  3. Step 3: Cross multiply
    391,904.73x = 540,943.52 × 255,959.29
  4. Step 4: Simplify right side
    391,904.73x = 138,459,518,705.68
  5. Step 5: Solve for x
    x = 138,459,518,705.68/391,904.73
  6. Step 6: Final answer
    x = 353,298.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.