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Finding the Fourth Proportional to 245,158.71, 338,311.19 and 136,262.51

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Solution

The fourth proportional to 245,158.71, 338,311.19 and 136,262.51 is: 188,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,158.71 : 338,311.19 = 136,262.51 : x
  2. Step 2: Convert to fraction form
    245,158.71/338,311.19 = 136,262.51/x
  3. Step 3: Cross multiply
    245,158.71x = 338,311.19 × 136,262.51
  4. Step 4: Simplify right side
    245,158.71x = 46,099,133,096.92
  5. Step 5: Solve for x
    x = 46,099,133,096.92/245,158.71
  6. Step 6: Final answer
    x = 188,037.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.