Home / 285,899.58-428,864.76-75,531.78

Finding the Fourth Proportional to 285,899.58, 428,864.76 and 75,531.78

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Solution

The fourth proportional to 285,899.58, 428,864.76 and 75,531.78 is: 113,301.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,899.58 : 428,864.76 = 75,531.78 : x
  2. Step 2: Convert to fraction form
    285,899.58/428,864.76 = 75,531.78/x
  3. Step 3: Cross multiply
    285,899.58x = 428,864.76 × 75,531.78
  4. Step 4: Simplify right side
    285,899.58x = 32,392,918,702.07
  5. Step 5: Solve for x
    x = 32,392,918,702.07/285,899.58
  6. Step 6: Final answer
    x = 113,301.74

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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.