Home / 236,209.20-354,342.60-86,426.16

Finding the Fourth Proportional to 236,209.20, 354,342.60 and 86,426.16

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Solution

The fourth proportional to 236,209.20, 354,342.60 and 86,426.16 is: 129,649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,209.20 : 354,342.60 = 86,426.16 : x
  2. Step 2: Convert to fraction form
    236,209.20/354,342.60 = 86,426.16/x
  3. Step 3: Cross multiply
    236,209.20x = 354,342.60 × 86,426.16
  4. Step 4: Simplify right side
    236,209.20x = 30,624,470,242.42
  5. Step 5: Solve for x
    x = 30,624,470,242.42/236,209.20
  6. Step 6: Final answer
    x = 129,649.78

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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.