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Finding the Fourth Proportional to 253,451.48, 349,762.11 and 137,164.71

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Solution

The fourth proportional to 253,451.48, 349,762.11 and 137,164.71 is: 189,286.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,451.48 : 349,762.11 = 137,164.71 : x
  2. Step 2: Convert to fraction form
    253,451.48/349,762.11 = 137,164.71/x
  3. Step 3: Cross multiply
    253,451.48x = 349,762.11 × 137,164.71
  4. Step 4: Simplify right side
    253,451.48x = 47,975,018,387.14
  5. Step 5: Solve for x
    x = 47,975,018,387.14/253,451.48
  6. Step 6: Final answer
    x = 189,286.80

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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.