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Finding the Fourth Proportional to 253,366.88, 349,650.72 and 138,655.69

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Solution

The fourth proportional to 253,366.88, 349,650.72 and 138,655.69 is: 191,347.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,366.88 : 349,650.72 = 138,655.69 : x
  2. Step 2: Convert to fraction form
    253,366.88/349,650.72 = 138,655.69/x
  3. Step 3: Cross multiply
    253,366.88x = 349,650.72 × 138,655.69
  4. Step 4: Simplify right side
    253,366.88x = 48,481,060,966.47
  5. Step 5: Solve for x
    x = 48,481,060,966.47/253,366.88
  6. Step 6: Final answer
    x = 191,347.27

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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.