Home / 285,743.12-428,584.56-117,281.20

Finding the Fourth Proportional to 285,743.12, 428,584.56 and 117,281.20

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Solution

The fourth proportional to 285,743.12, 428,584.56 and 117,281.20 is: 175,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,743.12 : 428,584.56 = 117,281.20 : x
  2. Step 2: Convert to fraction form
    285,743.12/428,584.56 = 117,281.20/x
  3. Step 3: Cross multiply
    285,743.12x = 428,584.56 × 117,281.20
  4. Step 4: Simplify right side
    285,743.12x = 50,264,911,498.27
  5. Step 5: Solve for x
    x = 50,264,911,498.27/285,743.12
  6. Step 6: Final answer
    x = 175,909.44

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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.