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Finding the Fourth Proportional to 154,485, 231,678.36 and 49,279.68

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Solution

The fourth proportional to 154,485, 231,678.36 and 49,279.68 is: 73,903.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,485 : 231,678.36 = 49,279.68 : x
  2. Step 2: Convert to fraction form
    154,485/231,678.36 = 49,279.68/x
  3. Step 3: Cross multiply
    154,485x = 231,678.36 × 49,279.68
  4. Step 4: Simplify right side
    154,485x = 11,417,035,443.72
  5. Step 5: Solve for x
    x = 11,417,035,443.72/154,485
  6. Step 6: Final answer
    x = 73,903.84

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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.