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Finding the Fourth Proportional to 218,980.32, 302,363.88 and 171,369.36

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Solution

The fourth proportional to 218,980.32, 302,363.88 and 171,369.36 is: 236,623.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,980.32 : 302,363.88 = 171,369.36 : x
  2. Step 2: Convert to fraction form
    218,980.32/302,363.88 = 171,369.36/x
  3. Step 3: Cross multiply
    218,980.32x = 302,363.88 × 171,369.36
  4. Step 4: Simplify right side
    218,980.32x = 51,815,904,602.72
  5. Step 5: Solve for x
    x = 51,815,904,602.72/218,980.32
  6. Step 6: Final answer
    x = 236,623.57

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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.