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Finding the Fourth Proportional to 234,081.40, 350,528.10 and 128,781.40

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Solution

The fourth proportional to 234,081.40, 350,528.10 and 128,781.40 is: 192,845.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,081.40 : 350,528.10 = 128,781.40 : x
  2. Step 2: Convert to fraction form
    234,081.40/350,528.10 = 128,781.40/x
  3. Step 3: Cross multiply
    234,081.40x = 350,528.10 × 128,781.40
  4. Step 4: Simplify right side
    234,081.40x = 45,141,499,457.34
  5. Step 5: Solve for x
    x = 45,141,499,457.34/234,081.40
  6. Step 6: Final answer
    x = 192,845.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.