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Finding the Fourth Proportional to 352,157.48, 485,440.08 and 215,939.24

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Solution

The fourth proportional to 352,157.48, 485,440.08 and 215,939.24 is: 297,666.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,157.48 : 485,440.08 = 215,939.24 : x
  2. Step 2: Convert to fraction form
    352,157.48/485,440.08 = 215,939.24/x
  3. Step 3: Cross multiply
    352,157.48x = 485,440.08 × 215,939.24
  4. Step 4: Simplify right side
    352,157.48x = 104,825,561,940.74
  5. Step 5: Solve for x
    x = 104,825,561,940.74/352,157.48
  6. Step 6: Final answer
    x = 297,666.72

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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.