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Finding the Fourth Proportional to 309,250.81, 426,758.88 and 181,934.59

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Solution

The fourth proportional to 309,250.81, 426,758.88 and 181,934.59 is: 251,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,250.81 : 426,758.88 = 181,934.59 : x
  2. Step 2: Convert to fraction form
    309,250.81/426,758.88 = 181,934.59/x
  3. Step 3: Cross multiply
    309,250.81x = 426,758.88 × 181,934.59
  4. Step 4: Simplify right side
    309,250.81x = 77,642,201,861.66
  5. Step 5: Solve for x
    x = 77,642,201,861.66/309,250.81
  6. Step 6: Final answer
    x = 251,065.48

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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.