Home / 319,331.90-478,825.05-132,362.30

Finding the Fourth Proportional to 319,331.90, 478,825.05 and 132,362.30

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Solution

The fourth proportional to 319,331.90, 478,825.05 and 132,362.30 is: 198,471.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,331.90 : 478,825.05 = 132,362.30 : x
  2. Step 2: Convert to fraction form
    319,331.90/478,825.05 = 132,362.30/x
  3. Step 3: Cross multiply
    319,331.90x = 478,825.05 × 132,362.30
  4. Step 4: Simplify right side
    319,331.90x = 63,378,384,915.62
  5. Step 5: Solve for x
    x = 63,378,384,915.62/319,331.90
  6. Step 6: Final answer
    x = 198,471.82

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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.