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Finding the Fourth Proportional to 235,661.40, 353,282.58 and 85,873.50

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Solution

The fourth proportional to 235,661.40, 353,282.58 and 85,873.50 is: 128,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,661.40 : 353,282.58 = 85,873.50 : x
  2. Step 2: Convert to fraction form
    235,661.40/353,282.58 = 85,873.50/x
  3. Step 3: Cross multiply
    235,661.40x = 353,282.58 × 85,873.50
  4. Step 4: Simplify right side
    235,661.40x = 30,337,611,633.63
  5. Step 5: Solve for x
    x = 30,337,611,633.63/235,661.40
  6. Step 6: Final answer
    x = 128,733.90

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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.