Home / 218,088.40-300,986.96-121,302.04

Finding the Fourth Proportional to 218,088.40, 300,986.96 and 121,302.04

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Solution

The fourth proportional to 218,088.40, 300,986.96 and 121,302.04 is: 167,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,088.40 : 300,986.96 = 121,302.04 : x
  2. Step 2: Convert to fraction form
    218,088.40/300,986.96 = 121,302.04/x
  3. Step 3: Cross multiply
    218,088.40x = 300,986.96 × 121,302.04
  4. Step 4: Simplify right side
    218,088.40x = 36,510,332,261.40
  5. Step 5: Solve for x
    x = 36,510,332,261.40/218,088.40
  6. Step 6: Final answer
    x = 167,410.70

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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.