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Finding the Fourth Proportional to 218,970.65, 302,179.94 and 118,368.65

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Solution

The fourth proportional to 218,970.65, 302,179.94 and 118,368.65 is: 163,348.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,970.65 : 302,179.94 = 118,368.65 : x
  2. Step 2: Convert to fraction form
    218,970.65/302,179.94 = 118,368.65/x
  3. Step 3: Cross multiply
    218,970.65x = 302,179.94 × 118,368.65
  4. Step 4: Simplify right side
    218,970.65x = 35,768,629,452.14
  5. Step 5: Solve for x
    x = 35,768,629,452.14/218,970.65
  6. Step 6: Final answer
    x = 163,348.97

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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.