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Finding the Fourth Proportional to 245,357.70, 368,145.90 and 112,169.40

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Solution

The fourth proportional to 245,357.70, 368,145.90 and 112,169.40 is: 168,304.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,357.70 : 368,145.90 = 112,169.40 : x
  2. Step 2: Convert to fraction form
    245,357.70/368,145.90 = 112,169.40/x
  3. Step 3: Cross multiply
    245,357.70x = 368,145.90 × 112,169.40
  4. Step 4: Simplify right side
    245,357.70x = 41,294,704,715.46
  5. Step 5: Solve for x
    x = 41,294,704,715.46/245,357.70
  6. Step 6: Final answer
    x = 168,304.09

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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.