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Finding the Fourth Proportional to 235,636.02, 353,548.26 and 85,887

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Solution

The fourth proportional to 235,636.02, 353,548.26 and 85,887 is: 128,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,636.02 : 353,548.26 = 85,887 : x
  2. Step 2: Convert to fraction form
    235,636.02/353,548.26 = 85,887/x
  3. Step 3: Cross multiply
    235,636.02x = 353,548.26 × 85,887
  4. Step 4: Simplify right side
    235,636.02x = 30,365,199,406.62
  5. Step 5: Solve for x
    x = 30,365,199,406.62/235,636.02
  6. Step 6: Final answer
    x = 128,864.85

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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.