Home / 218,712.96-301,851.36-123,242.40

Finding the Fourth Proportional to 218,712.96, 301,851.36 and 123,242.40

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Solution

The fourth proportional to 218,712.96, 301,851.36 and 123,242.40 is: 170,089.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,712.96 : 301,851.36 = 123,242.40 : x
  2. Step 2: Convert to fraction form
    218,712.96/301,851.36 = 123,242.40/x
  3. Step 3: Cross multiply
    218,712.96x = 301,851.36 × 123,242.40
  4. Step 4: Simplify right side
    218,712.96x = 37,200,886,049.66
  5. Step 5: Solve for x
    x = 37,200,886,049.66/218,712.96
  6. Step 6: Final answer
    x = 170,089.99

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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.