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Finding the Fourth Proportional to 245,942.40, 369,086.40 and 105,801.60

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Solution

The fourth proportional to 245,942.40, 369,086.40 and 105,801.60 is: 158,776.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,942.40 : 369,086.40 = 105,801.60 : x
  2. Step 2: Convert to fraction form
    245,942.40/369,086.40 = 105,801.60/x
  3. Step 3: Cross multiply
    245,942.40x = 369,086.40 × 105,801.60
  4. Step 4: Simplify right side
    245,942.40x = 39,049,931,658.24
  5. Step 5: Solve for x
    x = 39,049,931,658.24/245,942.40
  6. Step 6: Final answer
    x = 158,776.74

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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.