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Finding the Fourth Proportional to 352,330.32, 528,513.92 and 99,629.30

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Solution

The fourth proportional to 352,330.32, 528,513.92 and 99,629.30 is: 149,449.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,330.32 : 528,513.92 = 99,629.30 : x
  2. Step 2: Convert to fraction form
    352,330.32/528,513.92 = 99,629.30/x
  3. Step 3: Cross multiply
    352,330.32x = 528,513.92 × 99,629.30
  4. Step 4: Simplify right side
    352,330.32x = 52,655,468,749.14
  5. Step 5: Solve for x
    x = 52,655,468,749.14/352,330.32
  6. Step 6: Final answer
    x = 149,449.16

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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.