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Finding the Fourth Proportional to 218,117.96, 301,013.46 and 122,654.60

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Solution

The fourth proportional to 218,117.96, 301,013.46 and 122,654.60 is: 169,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,117.96 : 301,013.46 = 122,654.60 : x
  2. Step 2: Convert to fraction form
    218,117.96/301,013.46 = 122,654.60/x
  3. Step 3: Cross multiply
    218,117.96x = 301,013.46 × 122,654.60
  4. Step 4: Simplify right side
    218,117.96x = 36,920,685,530.92
  5. Step 5: Solve for x
    x = 36,920,685,530.92/218,117.96
  6. Step 6: Final answer
    x = 169,269.35

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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.