Home / 285,502.08-428,220-75,156.44

Finding the Fourth Proportional to 285,502.08, 428,220 and 75,156.44

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Solution

The fourth proportional to 285,502.08, 428,220 and 75,156.44 is: 112,725.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,502.08 : 428,220 = 75,156.44 : x
  2. Step 2: Convert to fraction form
    285,502.08/428,220 = 75,156.44/x
  3. Step 3: Cross multiply
    285,502.08x = 428,220 × 75,156.44
  4. Step 4: Simplify right side
    285,502.08x = 32,183,490,736.80
  5. Step 5: Solve for x
    x = 32,183,490,736.80/285,502.08
  6. Step 6: Final answer
    x = 112,725.94

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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.