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Finding the Fourth Proportional to 235,689.94, 353,325.31 and 85,902.02

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Solution

The fourth proportional to 235,689.94, 353,325.31 and 85,902.02 is: 128,776.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,689.94 : 353,325.31 = 85,902.02 : x
  2. Step 2: Convert to fraction form
    235,689.94/353,325.31 = 85,902.02/x
  3. Step 3: Cross multiply
    235,689.94x = 353,325.31 × 85,902.02
  4. Step 4: Simplify right side
    235,689.94x = 30,351,357,846.13
  5. Step 5: Solve for x
    x = 30,351,357,846.13/235,689.94
  6. Step 6: Final answer
    x = 128,776.64

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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.