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Finding the Fourth Proportional to 253,010.99, 349,145.59 and 138,288.69

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Solution

The fourth proportional to 253,010.99, 349,145.59 and 138,288.69 is: 190,833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,010.99 : 349,145.59 = 138,288.69 : x
  2. Step 2: Convert to fraction form
    253,010.99/349,145.59 = 138,288.69/x
  3. Step 3: Cross multiply
    253,010.99x = 349,145.59 × 138,288.69
  4. Step 4: Simplify right side
    253,010.99x = 48,282,885,914.66
  5. Step 5: Solve for x
    x = 48,282,885,914.66/253,010.99
  6. Step 6: Final answer
    x = 190,833.15

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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.