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Finding the Fourth Proportional to 224,678.40, 336,919.20 and 66,875.40

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Solution

The fourth proportional to 224,678.40, 336,919.20 and 66,875.40 is: 100,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,678.40 : 336,919.20 = 66,875.40 : x
  2. Step 2: Convert to fraction form
    224,678.40/336,919.20 = 66,875.40/x
  3. Step 3: Cross multiply
    224,678.40x = 336,919.20 × 66,875.40
  4. Step 4: Simplify right side
    224,678.40x = 22,531,606,267.68
  5. Step 5: Solve for x
    x = 22,531,606,267.68/224,678.40
  6. Step 6: Final answer
    x = 100,283.81

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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.