Home / 285,621.10-428,431.65-240,001.90

Finding the Fourth Proportional to 285,621.10, 428,431.65 and 240,001.90

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Solution

The fourth proportional to 285,621.10, 428,431.65 and 240,001.90 is: 360,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,621.10 : 428,431.65 = 240,001.90 : x
  2. Step 2: Convert to fraction form
    285,621.10/428,431.65 = 240,001.90/x
  3. Step 3: Cross multiply
    285,621.10x = 428,431.65 × 240,001.90
  4. Step 4: Simplify right side
    285,621.10x = 102,824,410,020.14
  5. Step 5: Solve for x
    x = 102,824,410,020.14/285,621.10
  6. Step 6: Final answer
    x = 360,002.85

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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.