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Finding the Fourth Proportional to 352,158, 528,314.76 and 130,542

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Solution

The fourth proportional to 352,158, 528,314.76 and 130,542 is: 195,841.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,158 : 528,314.76 = 130,542 : x
  2. Step 2: Convert to fraction form
    352,158/528,314.76 = 130,542/x
  3. Step 3: Cross multiply
    352,158x = 528,314.76 × 130,542
  4. Step 4: Simplify right side
    352,158x = 68,967,265,399.92
  5. Step 5: Solve for x
    x = 68,967,265,399.92/352,158
  6. Step 6: Final answer
    x = 195,841.82

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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.