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Finding the Fourth Proportional to 352,179.92, 528,250.43 and 257,507.12

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Solution

The fourth proportional to 352,179.92, 528,250.43 and 257,507.12 is: 386,246.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,179.92 : 528,250.43 = 257,507.12 : x
  2. Step 2: Convert to fraction form
    352,179.92/528,250.43 = 257,507.12/x
  3. Step 3: Cross multiply
    352,179.92x = 528,250.43 × 257,507.12
  4. Step 4: Simplify right side
    352,179.92x = 136,028,242,939.27
  5. Step 5: Solve for x
    x = 136,028,242,939.27/352,179.92
  6. Step 6: Final answer
    x = 386,246.45

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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.