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Finding the Fourth Proportional to 253,395.29, 349,670.43 and 138,651.05

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Solution

The fourth proportional to 253,395.29, 349,670.43 and 138,651.05 is: 191,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,395.29 : 349,670.43 = 138,651.05 : x
  2. Step 2: Convert to fraction form
    253,395.29/349,670.43 = 138,651.05/x
  3. Step 3: Cross multiply
    253,395.29x = 349,670.43 × 138,651.05
  4. Step 4: Simplify right side
    253,395.29x = 48,482,170,525.10
  5. Step 5: Solve for x
    x = 48,482,170,525.10/253,395.29
  6. Step 6: Final answer
    x = 191,330.19

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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.