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Finding the Fourth Proportional to 353,618.49, 488,004.03 and 217,730.82

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Solution

The fourth proportional to 353,618.49, 488,004.03 and 217,730.82 is: 300,475.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,618.49 : 488,004.03 = 217,730.82 : x
  2. Step 2: Convert to fraction form
    353,618.49/488,004.03 = 217,730.82/x
  3. Step 3: Cross multiply
    353,618.49x = 488,004.03 × 217,730.82
  4. Step 4: Simplify right side
    353,618.49x = 106,253,517,615.21
  5. Step 5: Solve for x
    x = 106,253,517,615.21/353,618.49
  6. Step 6: Final answer
    x = 300,475.01

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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.