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Finding the Fourth Proportional to 242,811.10, 335,081.30 and 135,388.40

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Solution

The fourth proportional to 242,811.10, 335,081.30 and 135,388.40 is: 186,837.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,811.10 : 335,081.30 = 135,388.40 : x
  2. Step 2: Convert to fraction form
    242,811.10/335,081.30 = 135,388.40/x
  3. Step 3: Cross multiply
    242,811.10x = 335,081.30 × 135,388.40
  4. Step 4: Simplify right side
    242,811.10x = 45,366,119,486.13
  5. Step 5: Solve for x
    x = 45,366,119,486.13/242,811.10
  6. Step 6: Final answer
    x = 186,837.09

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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.