Home / 231,823.20-347,540.40-121,015.20

Finding the Fourth Proportional to 231,823.20, 347,540.40 and 121,015.20

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Solution

The fourth proportional to 231,823.20, 347,540.40 and 121,015.20 is: 181,421.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,823.20 : 347,540.40 = 121,015.20 : x
  2. Step 2: Convert to fraction form
    231,823.20/347,540.40 = 121,015.20/x
  3. Step 3: Cross multiply
    231,823.20x = 347,540.40 × 121,015.20
  4. Step 4: Simplify right side
    231,823.20x = 42,057,671,014.08
  5. Step 5: Solve for x
    x = 42,057,671,014.08/231,823.20
  6. Step 6: Final answer
    x = 181,421.32

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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.