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Finding the Fourth Proportional to 203,405.58, 280,831.46 and 130,840.92

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Solution

The fourth proportional to 203,405.58, 280,831.46 and 130,840.92 is: 180,645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,405.58 : 280,831.46 = 130,840.92 : x
  2. Step 2: Convert to fraction form
    203,405.58/280,831.46 = 130,840.92/x
  3. Step 3: Cross multiply
    203,405.58x = 280,831.46 × 130,840.92
  4. Step 4: Simplify right side
    203,405.58x = 36,744,245,937.14
  5. Step 5: Solve for x
    x = 36,744,245,937.14/203,405.58
  6. Step 6: Final answer
    x = 180,645.22

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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.