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Finding the Fourth Proportional to 239,286.40, 358,929.60 and 155,305.60

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Solution

The fourth proportional to 239,286.40, 358,929.60 and 155,305.60 is: 232,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,286.40 : 358,929.60 = 155,305.60 : x
  2. Step 2: Convert to fraction form
    239,286.40/358,929.60 = 155,305.60/x
  3. Step 3: Cross multiply
    239,286.40x = 358,929.60 × 155,305.60
  4. Step 4: Simplify right side
    239,286.40x = 55,743,776,885.76
  5. Step 5: Solve for x
    x = 55,743,776,885.76/239,286.40
  6. Step 6: Final answer
    x = 232,958.40

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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.