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Finding the Fourth Proportional to 262,831.20, 394,246.80 and 113,143.20

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Solution

The fourth proportional to 262,831.20, 394,246.80 and 113,143.20 is: 169,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,831.20 : 394,246.80 = 113,143.20 : x
  2. Step 2: Convert to fraction form
    262,831.20/394,246.80 = 113,143.20/x
  3. Step 3: Cross multiply
    262,831.20x = 394,246.80 × 113,143.20
  4. Step 4: Simplify right side
    262,831.20x = 44,606,344,541.76
  5. Step 5: Solve for x
    x = 44,606,344,541.76/262,831.20
  6. Step 6: Final answer
    x = 169,714.80

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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.