Home / 231,207.28-319,056.24-145,211.20

Finding the Fourth Proportional to 231,207.28, 319,056.24 and 145,211.20

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Solution

The fourth proportional to 231,207.28, 319,056.24 and 145,211.20 is: 200,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,207.28 : 319,056.24 = 145,211.20 : x
  2. Step 2: Convert to fraction form
    231,207.28/319,056.24 = 145,211.20/x
  3. Step 3: Cross multiply
    231,207.28x = 319,056.24 × 145,211.20
  4. Step 4: Simplify right side
    231,207.28x = 46,330,539,477.89
  5. Step 5: Solve for x
    x = 46,330,539,477.89/231,207.28
  6. Step 6: Final answer
    x = 200,385.30

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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.