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Finding the Fourth Proportional to 218,890.62, 302,069.25 and 118,288.62

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Solution

The fourth proportional to 218,890.62, 302,069.25 and 118,288.62 is: 163,238.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,890.62 : 302,069.25 = 118,288.62 : x
  2. Step 2: Convert to fraction form
    218,890.62/302,069.25 = 118,288.62/x
  3. Step 3: Cross multiply
    218,890.62x = 302,069.25 × 118,288.62
  4. Step 4: Simplify right side
    218,890.62x = 35,731,354,726.94
  5. Step 5: Solve for x
    x = 35,731,354,726.94/218,890.62
  6. Step 6: Final answer
    x = 163,238.40

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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.