Home / 231,815.20-347,528.40-121,007.20

Finding the Fourth Proportional to 231,815.20, 347,528.40 and 121,007.20

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Solution

The fourth proportional to 231,815.20, 347,528.40 and 121,007.20 is: 181,409.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,815.20 : 347,528.40 = 121,007.20 : x
  2. Step 2: Convert to fraction form
    231,815.20/347,528.40 = 121,007.20/x
  3. Step 3: Cross multiply
    231,815.20x = 347,528.40 × 121,007.20
  4. Step 4: Simplify right side
    231,815.20x = 42,053,438,604.48
  5. Step 5: Solve for x
    x = 42,053,438,604.48/231,815.20
  6. Step 6: Final answer
    x = 181,409.32

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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.