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Finding the Fourth Proportional to 218,501.62, 301,532.72 and 121,704.69

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Solution

The fourth proportional to 218,501.62, 301,532.72 and 121,704.69 is: 167,952.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,501.62 : 301,532.72 = 121,704.69 : x
  2. Step 2: Convert to fraction form
    218,501.62/301,532.72 = 121,704.69/x
  3. Step 3: Cross multiply
    218,501.62x = 301,532.72 × 121,704.69
  4. Step 4: Simplify right side
    218,501.62x = 36,697,946,212.46
  5. Step 5: Solve for x
    x = 36,697,946,212.46/218,501.62
  6. Step 6: Final answer
    x = 167,952.74

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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.