Home / 285,748.14-428,580.09-75,400.86

Finding the Fourth Proportional to 285,748.14, 428,580.09 and 75,400.86

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Solution

The fourth proportional to 285,748.14, 428,580.09 and 75,400.86 is: 113,090.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,748.14 : 428,580.09 = 75,400.86 : x
  2. Step 2: Convert to fraction form
    285,748.14/428,580.09 = 75,400.86/x
  3. Step 3: Cross multiply
    285,748.14x = 428,580.09 × 75,400.86
  4. Step 4: Simplify right side
    285,748.14x = 32,315,307,364.88
  5. Step 5: Solve for x
    x = 32,315,307,364.88/285,748.14
  6. Step 6: Final answer
    x = 113,090.18

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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.