Home / 319,341.02-478,469.30-192,715.20

Finding the Fourth Proportional to 319,341.02, 478,469.30 and 192,715.20

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Solution

The fourth proportional to 319,341.02, 478,469.30 and 192,715.20 is: 288,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,341.02 : 478,469.30 = 192,715.20 : x
  2. Step 2: Convert to fraction form
    319,341.02/478,469.30 = 192,715.20/x
  3. Step 3: Cross multiply
    319,341.02x = 478,469.30 × 192,715.20
  4. Step 4: Simplify right side
    319,341.02x = 92,208,305,879.78
  5. Step 5: Solve for x
    x = 92,208,305,879.78/319,341.02
  6. Step 6: Final answer
    x = 288,745.58

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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.