Home / 319,066.40-478,599.60-311,193.20

Finding the Fourth Proportional to 319,066.40, 478,599.60 and 311,193.20

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Solution

The fourth proportional to 319,066.40, 478,599.60 and 311,193.20 is: 466,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,066.40 : 478,599.60 = 311,193.20 : x
  2. Step 2: Convert to fraction form
    319,066.40/478,599.60 = 311,193.20/x
  3. Step 3: Cross multiply
    319,066.40x = 478,599.60 × 311,193.20
  4. Step 4: Simplify right side
    319,066.40x = 148,936,941,042.72
  5. Step 5: Solve for x
    x = 148,936,941,042.72/319,066.40
  6. Step 6: Final answer
    x = 466,789.80

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Similar ratio
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1.5x scale

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.