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Finding the Fourth Proportional to 352,345.30, 528,535.74 and 99,643.96

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Solution

The fourth proportional to 352,345.30, 528,535.74 and 99,643.96 is: 149,470.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,345.30 : 528,535.74 = 99,643.96 : x
  2. Step 2: Convert to fraction form
    352,345.30/528,535.74 = 99,643.96/x
  3. Step 3: Cross multiply
    352,345.30x = 528,535.74 × 99,643.96
  4. Step 4: Simplify right side
    352,345.30x = 52,665,394,135.13
  5. Step 5: Solve for x
    x = 52,665,394,135.13/352,345.30
  6. Step 6: Final answer
    x = 149,470.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.