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Finding the Fourth Proportional to 253,053.05, 349,213.29 and 138,332.20

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Solution

The fourth proportional to 253,053.05, 349,213.29 and 138,332.20 is: 190,898.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,053.05 : 349,213.29 = 138,332.20 : x
  2. Step 2: Convert to fraction form
    253,053.05/349,213.29 = 138,332.20/x
  3. Step 3: Cross multiply
    253,053.05x = 349,213.29 × 138,332.20
  4. Step 4: Simplify right side
    253,053.05x = 48,307,442,674.94
  5. Step 5: Solve for x
    x = 48,307,442,674.94/253,053.05
  6. Step 6: Final answer
    x = 190,898.48

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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.