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Finding the Fourth Proportional to 353,355.60, 487,643.40 and 202,481.76

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Solution

The fourth proportional to 353,355.60, 487,643.40 and 202,481.76 is: 279,432.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,355.60 : 487,643.40 = 202,481.76 : x
  2. Step 2: Convert to fraction form
    353,355.60/487,643.40 = 202,481.76/x
  3. Step 3: Cross multiply
    353,355.60x = 487,643.40 × 202,481.76
  4. Step 4: Simplify right side
    353,355.60x = 98,738,893,884.38
  5. Step 5: Solve for x
    x = 98,738,893,884.38/353,355.60
  6. Step 6: Final answer
    x = 279,432.09

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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.