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Finding the Fourth Proportional to 352,436.86, 528,650.73 and 86,199.58

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Solution

The fourth proportional to 352,436.86, 528,650.73 and 86,199.58 is: 129,298.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,436.86 : 528,650.73 = 86,199.58 : x
  2. Step 2: Convert to fraction form
    352,436.86/528,650.73 = 86,199.58/x
  3. Step 3: Cross multiply
    352,436.86x = 528,650.73 × 86,199.58
  4. Step 4: Simplify right side
    352,436.86x = 45,569,470,892.69
  5. Step 5: Solve for x
    x = 45,569,470,892.69/352,436.86
  6. Step 6: Final answer
    x = 129,298.25

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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.