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Finding the Fourth Proportional to 253,057.98, 349,220.09 and 138,337.13

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Solution

The fourth proportional to 253,057.98, 349,220.09 and 138,337.13 is: 190,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,057.98 : 349,220.09 = 138,337.13 : x
  2. Step 2: Convert to fraction form
    253,057.98/349,220.09 = 138,337.13/x
  3. Step 3: Cross multiply
    253,057.98x = 349,220.09 × 138,337.13
  4. Step 4: Simplify right side
    253,057.98x = 48,310,104,988.94
  5. Step 5: Solve for x
    x = 48,310,104,988.94/253,057.98
  6. Step 6: Final answer
    x = 190,905.28

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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.