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Finding the Fourth Proportional to 218,416.82, 301,424.91 and 122,929.70

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Solution

The fourth proportional to 218,416.82, 301,424.91 and 122,929.70 is: 169,648.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,416.82 : 301,424.91 = 122,929.70 : x
  2. Step 2: Convert to fraction form
    218,416.82/301,424.91 = 122,929.70/x
  3. Step 3: Cross multiply
    218,416.82x = 301,424.91 × 122,929.70
  4. Step 4: Simplify right side
    218,416.82x = 37,054,073,758.83
  5. Step 5: Solve for x
    x = 37,054,073,758.83/218,416.82
  6. Step 6: Final answer
    x = 169,648.44

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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.