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Finding the Fourth Proportional to 352,359.30, 486,266.66 and 207,138.45

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Solution

The fourth proportional to 352,359.30, 486,266.66 and 207,138.45 is: 285,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,359.30 : 486,266.66 = 207,138.45 : x
  2. Step 2: Convert to fraction form
    352,359.30/486,266.66 = 207,138.45/x
  3. Step 3: Cross multiply
    352,359.30x = 486,266.66 × 207,138.45
  4. Step 4: Simplify right side
    352,359.30x = 100,724,522,239.08
  5. Step 5: Solve for x
    x = 100,724,522,239.08/352,359.30
  6. Step 6: Final answer
    x = 285,857.43

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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.