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Finding the Fourth Proportional to 262,074.66, 392,831.57 and 135,587.49

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Solution

The fourth proportional to 262,074.66, 392,831.57 and 135,587.49 is: 203,236.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,074.66 : 392,831.57 = 135,587.49 : x
  2. Step 2: Convert to fraction form
    262,074.66/392,831.57 = 135,587.49/x
  3. Step 3: Cross multiply
    262,074.66x = 392,831.57 × 135,587.49
  4. Step 4: Simplify right side
    262,074.66x = 53,263,045,434.91
  5. Step 5: Solve for x
    x = 53,263,045,434.91/262,074.66
  6. Step 6: Final answer
    x = 203,236.15

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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.