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Finding the Fourth Proportional to 218,479.36, 301,502.16 and 122,987.52

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Solution

The fourth proportional to 218,479.36, 301,502.16 and 122,987.52 is: 169,723.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,479.36 : 301,502.16 = 122,987.52 : x
  2. Step 2: Convert to fraction form
    218,479.36/301,502.16 = 122,987.52/x
  3. Step 3: Cross multiply
    218,479.36x = 301,502.16 × 122,987.52
  4. Step 4: Simplify right side
    218,479.36x = 37,081,002,933.04
  5. Step 5: Solve for x
    x = 37,081,002,933.04/218,479.36
  6. Step 6: Final answer
    x = 169,723.14

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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.