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Finding the Fourth Proportional to 255,732.72, 352,911.18 and 142,555.47

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Solution

The fourth proportional to 255,732.72, 352,911.18 and 142,555.47 is: 196,726.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,732.72 : 352,911.18 = 142,555.47 : x
  2. Step 2: Convert to fraction form
    255,732.72/352,911.18 = 142,555.47/x
  3. Step 3: Cross multiply
    255,732.72x = 352,911.18 × 142,555.47
  4. Step 4: Simplify right side
    255,732.72x = 50,309,418,420.38
  5. Step 5: Solve for x
    x = 50,309,418,420.38/255,732.72
  6. Step 6: Final answer
    x = 196,726.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.