Home / 319,436.20-478,770.30-132,351.40

Finding the Fourth Proportional to 319,436.20, 478,770.30 and 132,351.40

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Solution

The fourth proportional to 319,436.20, 478,770.30 and 132,351.40 is: 198,368.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,436.20 : 478,770.30 = 132,351.40 : x
  2. Step 2: Convert to fraction form
    319,436.20/478,770.30 = 132,351.40/x
  3. Step 3: Cross multiply
    319,436.20x = 478,770.30 × 132,351.40
  4. Step 4: Simplify right side
    319,436.20x = 63,365,919,483.42
  5. Step 5: Solve for x
    x = 63,365,919,483.42/319,436.20
  6. Step 6: Final answer
    x = 198,368.00

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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.