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Finding the Fourth Proportional to 251,639.20, 376,802.70 and 162,409.60

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Solution

The fourth proportional to 251,639.20, 376,802.70 and 162,409.60 is: 243,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,639.20 : 376,802.70 = 162,409.60 : x
  2. Step 2: Convert to fraction form
    251,639.20/376,802.70 = 162,409.60/x
  3. Step 3: Cross multiply
    251,639.20x = 376,802.70 × 162,409.60
  4. Step 4: Simplify right side
    251,639.20x = 61,196,375,785.92
  5. Step 5: Solve for x
    x = 61,196,375,785.92/251,639.20
  6. Step 6: Final answer
    x = 243,190.95

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1.5x scale

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.