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Finding the Fourth Proportional to 330,861, 495,896.22 and 120,384.36

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Solution

The fourth proportional to 330,861, 495,896.22 and 120,384.36 is: 180,432.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,861 : 495,896.22 = 120,384.36 : x
  2. Step 2: Convert to fraction form
    330,861/495,896.22 = 120,384.36/x
  3. Step 3: Cross multiply
    330,861x = 495,896.22 × 120,384.36
  4. Step 4: Simplify right side
    330,861x = 59,698,149,071.12
  5. Step 5: Solve for x
    x = 59,698,149,071.12/330,861
  6. Step 6: Final answer
    x = 180,432.72

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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.