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Finding the Fourth Proportional to 352,280, 528,309 and 115,567.52

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Solution

The fourth proportional to 352,280, 528,309 and 115,567.52 is: 173,314.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,280 : 528,309 = 115,567.52 : x
  2. Step 2: Convert to fraction form
    352,280/528,309 = 115,567.52/x
  3. Step 3: Cross multiply
    352,280x = 528,309 × 115,567.52
  4. Step 4: Simplify right side
    352,280x = 61,055,360,923.68
  5. Step 5: Solve for x
    x = 61,055,360,923.68/352,280
  6. Step 6: Final answer
    x = 173,314.87

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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.