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Finding the Fourth Proportional to 253,377.93, 349,661.52 and 138,656.61

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Solution

The fourth proportional to 253,377.93, 349,661.52 and 138,656.61 is: 191,346.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,377.93 : 349,661.52 = 138,656.61 : x
  2. Step 2: Convert to fraction form
    253,377.93/349,661.52 = 138,656.61/x
  3. Step 3: Cross multiply
    253,377.93x = 349,661.52 × 138,656.61
  4. Step 4: Simplify right side
    253,377.93x = 48,482,881,010.65
  5. Step 5: Solve for x
    x = 48,482,881,010.65/253,377.93
  6. Step 6: Final answer
    x = 191,346.11

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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.