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Finding the Fourth Proportional to 353,610.22, 487,992.63 and 217,722.55

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Solution

The fourth proportional to 353,610.22, 487,992.63 and 217,722.55 is: 300,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,610.22 : 487,992.63 = 217,722.55 : x
  2. Step 2: Convert to fraction form
    353,610.22/487,992.63 = 217,722.55/x
  3. Step 3: Cross multiply
    353,610.22x = 487,992.63 × 217,722.55
  4. Step 4: Simplify right side
    353,610.22x = 106,246,999,784.81
  5. Step 5: Solve for x
    x = 106,246,999,784.81/353,610.22
  6. Step 6: Final answer
    x = 300,463.60

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1.5x scale

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.