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Finding the Fourth Proportional to 218,971.65, 302,181.32 and 118,369.65

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Solution

The fourth proportional to 218,971.65, 302,181.32 and 118,369.65 is: 163,350.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,971.65 : 302,181.32 = 118,369.65 : x
  2. Step 2: Convert to fraction form
    218,971.65/302,181.32 = 118,369.65/x
  3. Step 3: Cross multiply
    218,971.65x = 302,181.32 × 118,369.65
  4. Step 4: Simplify right side
    218,971.65x = 35,769,097,084.94
  5. Step 5: Solve for x
    x = 35,769,097,084.94/218,971.65
  6. Step 6: Final answer
    x = 163,350.36

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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.