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Finding the Fourth Proportional to 212,554.53, 293,081.90 and 158,748.66

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Solution

The fourth proportional to 212,554.53, 293,081.90 and 158,748.66 is: 218,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,554.53 : 293,081.90 = 158,748.66 : x
  2. Step 2: Convert to fraction form
    212,554.53/293,081.90 = 158,748.66/x
  3. Step 3: Cross multiply
    212,554.53x = 293,081.90 × 158,748.66
  4. Step 4: Simplify right side
    212,554.53x = 46,526,358,101.51
  5. Step 5: Solve for x
    x = 46,526,358,101.51/212,554.53
  6. Step 6: Final answer
    x = 218,891.40

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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.