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Finding the Fourth Proportional to 352,437.86, 528,652.23 and 86,200.58

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Solution

The fourth proportional to 352,437.86, 528,652.23 and 86,200.58 is: 129,299.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,437.86 : 528,652.23 = 86,200.58 : x
  2. Step 2: Convert to fraction form
    352,437.86/528,652.23 = 86,200.58/x
  3. Step 3: Cross multiply
    352,437.86x = 528,652.23 × 86,200.58
  4. Step 4: Simplify right side
    352,437.86x = 45,570,128,844.29
  5. Step 5: Solve for x
    x = 45,570,128,844.29/352,437.86
  6. Step 6: Final answer
    x = 129,299.75

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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.