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Finding the Fourth Proportional to 248,656.50, 372,542.49 and 143,257.68

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Solution

The fourth proportional to 248,656.50, 372,542.49 and 143,257.68 is: 214,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,656.50 : 372,542.49 = 143,257.68 : x
  2. Step 2: Convert to fraction form
    248,656.50/372,542.49 = 143,257.68/x
  3. Step 3: Cross multiply
    248,656.50x = 372,542.49 × 143,257.68
  4. Step 4: Simplify right side
    248,656.50x = 53,369,572,818.82
  5. Step 5: Solve for x
    x = 53,369,572,818.82/248,656.50
  6. Step 6: Final answer
    x = 214,631.72

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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.