Home / 285,909.02-428,699.43-108,302.75

Finding the Fourth Proportional to 285,909.02, 428,699.43 and 108,302.75

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Solution

The fourth proportional to 285,909.02, 428,699.43 and 108,302.75 is: 162,391.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,909.02 : 428,699.43 = 108,302.75 : x
  2. Step 2: Convert to fraction form
    285,909.02/428,699.43 = 108,302.75/x
  3. Step 3: Cross multiply
    285,909.02x = 428,699.43 × 108,302.75
  4. Step 4: Simplify right side
    285,909.02x = 46,429,327,192.43
  5. Step 5: Solve for x
    x = 46,429,327,192.43/285,909.02
  6. Step 6: Final answer
    x = 162,391.96

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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.