Home / 311,916.80-467,875.20-288,297.20

Finding the Fourth Proportional to 311,916.80, 467,875.20 and 288,297.20

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Solution

The fourth proportional to 311,916.80, 467,875.20 and 288,297.20 is: 432,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,916.80 : 467,875.20 = 288,297.20 : x
  2. Step 2: Convert to fraction form
    311,916.80/467,875.20 = 288,297.20/x
  3. Step 3: Cross multiply
    311,916.80x = 467,875.20 × 288,297.20
  4. Step 4: Simplify right side
    311,916.80x = 134,887,110,109.44
  5. Step 5: Solve for x
    x = 134,887,110,109.44/311,916.80
  6. Step 6: Final answer
    x = 432,445.80

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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.