Home / 398,831.20-550,288.56-243,742.93

Finding the Fourth Proportional to 398,831.20, 550,288.56 and 243,742.93

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Solution

The fourth proportional to 398,831.20, 550,288.56 and 243,742.93 is: 336,305.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,831.20 : 550,288.56 = 243,742.93 : x
  2. Step 2: Convert to fraction form
    398,831.20/550,288.56 = 243,742.93/x
  3. Step 3: Cross multiply
    398,831.20x = 550,288.56 × 243,742.93
  4. Step 4: Simplify right side
    398,831.20x = 134,128,945,959.88
  5. Step 5: Solve for x
    x = 134,128,945,959.88/398,831.20
  6. Step 6: Final answer
    x = 336,305.05

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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.