Home / 315,531.24-435,450.82-172,304.60

Finding the Fourth Proportional to 315,531.24, 435,450.82 and 172,304.60

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Solution

The fourth proportional to 315,531.24, 435,450.82 and 172,304.60 is: 237,790.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,531.24 : 435,450.82 = 172,304.60 : x
  2. Step 2: Convert to fraction form
    315,531.24/435,450.82 = 172,304.60/x
  3. Step 3: Cross multiply
    315,531.24x = 435,450.82 × 172,304.60
  4. Step 4: Simplify right side
    315,531.24x = 75,030,179,359.77
  5. Step 5: Solve for x
    x = 75,030,179,359.77/315,531.24
  6. Step 6: Final answer
    x = 237,790.02

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1.5x scale

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.