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Finding the Fourth Proportional to 218,958.11, 302,162.05 and 118,356.11

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Solution

The fourth proportional to 218,958.11, 302,162.05 and 118,356.11 is: 163,331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,958.11 : 302,162.05 = 118,356.11 : x
  2. Step 2: Convert to fraction form
    218,958.11/302,162.05 = 118,356.11/x
  3. Step 3: Cross multiply
    218,958.11x = 302,162.05 × 118,356.11
  4. Step 4: Simplify right side
    218,958.11x = 35,762,723,464.76
  5. Step 5: Solve for x
    x = 35,762,723,464.76/218,958.11
  6. Step 6: Final answer
    x = 163,331.35

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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.