Home / 319,301.40-478,779.30-132,331.80

Finding the Fourth Proportional to 319,301.40, 478,779.30 and 132,331.80

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Solution

The fourth proportional to 319,301.40, 478,779.30 and 132,331.80 is: 198,426.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,301.40 : 478,779.30 = 132,331.80 : x
  2. Step 2: Convert to fraction form
    319,301.40/478,779.30 = 132,331.80/x
  3. Step 3: Cross multiply
    319,301.40x = 478,779.30 × 132,331.80
  4. Step 4: Simplify right side
    319,301.40x = 63,357,726,571.74
  5. Step 5: Solve for x
    x = 63,357,726,571.74/319,301.40
  6. Step 6: Final answer
    x = 198,426.08

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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.