Home / 402,932.40-603,669.60-319,243.20

Finding the Fourth Proportional to 402,932.40, 603,669.60 and 319,243.20

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Solution

The fourth proportional to 402,932.40, 603,669.60 and 319,243.20 is: 478,287.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,932.40 : 603,669.60 = 319,243.20 : x
  2. Step 2: Convert to fraction form
    402,932.40/603,669.60 = 319,243.20/x
  3. Step 3: Cross multiply
    402,932.40x = 603,669.60 × 319,243.20
  4. Step 4: Simplify right side
    402,932.40x = 192,717,414,846.72
  5. Step 5: Solve for x
    x = 192,717,414,846.72/402,932.40
  6. Step 6: Final answer
    x = 478,287.21

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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.