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Finding the Fourth Proportional to 235,351.74, 352,916.70 and 85,486.32

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Solution

The fourth proportional to 235,351.74, 352,916.70 and 85,486.32 is: 128,189.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,351.74 : 352,916.70 = 85,486.32 : x
  2. Step 2: Convert to fraction form
    235,351.74/352,916.70 = 85,486.32/x
  3. Step 3: Cross multiply
    235,351.74x = 352,916.70 × 85,486.32
  4. Step 4: Simplify right side
    235,351.74x = 30,169,549,949.54
  5. Step 5: Solve for x
    x = 30,169,549,949.54/235,351.74
  6. Step 6: Final answer
    x = 128,189.19

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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.