Home / 285,835.20-428,752.80-98,865.60

Finding the Fourth Proportional to 285,835.20, 428,752.80 and 98,865.60

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Solution

The fourth proportional to 285,835.20, 428,752.80 and 98,865.60 is: 148,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,835.20 : 428,752.80 = 98,865.60 : x
  2. Step 2: Convert to fraction form
    285,835.20/428,752.80 = 98,865.60/x
  3. Step 3: Cross multiply
    285,835.20x = 428,752.80 × 98,865.60
  4. Step 4: Simplify right side
    285,835.20x = 42,388,902,823.68
  5. Step 5: Solve for x
    x = 42,388,902,823.68/285,835.20
  6. Step 6: Final answer
    x = 148,298.40

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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.