Home / 285,760.18-428,663.64-143,532.32

Finding the Fourth Proportional to 285,760.18, 428,663.64 and 143,532.32

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Solution

The fourth proportional to 285,760.18, 428,663.64 and 143,532.32 is: 215,310.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,760.18 : 428,663.64 = 143,532.32 : x
  2. Step 2: Convert to fraction form
    285,760.18/428,663.64 = 143,532.32/x
  3. Step 3: Cross multiply
    285,760.18x = 428,663.64 × 143,532.32
  4. Step 4: Simplify right side
    285,760.18x = 61,527,086,748.84
  5. Step 5: Solve for x
    x = 61,527,086,748.84/285,760.18
  6. Step 6: Final answer
    x = 215,310.22

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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.