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Finding the Fourth Proportional to 218,412.56, 301,359.48 and 122,884.40

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Solution

The fourth proportional to 218,412.56, 301,359.48 and 122,884.40 is: 169,552.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,412.56 : 301,359.48 = 122,884.40 : x
  2. Step 2: Convert to fraction form
    218,412.56/301,359.48 = 122,884.40/x
  3. Step 3: Cross multiply
    218,412.56x = 301,359.48 × 122,884.40
  4. Step 4: Simplify right side
    218,412.56x = 37,032,378,884.11
  5. Step 5: Solve for x
    x = 37,032,378,884.11/218,412.56
  6. Step 6: Final answer
    x = 169,552.42

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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.