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Finding the Fourth Proportional to 279,970.40, 419,955.60 and 159,904.10

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Solution

The fourth proportional to 279,970.40, 419,955.60 and 159,904.10 is: 239,856.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,970.40 : 419,955.60 = 159,904.10 : x
  2. Step 2: Convert to fraction form
    279,970.40/419,955.60 = 159,904.10/x
  3. Step 3: Cross multiply
    279,970.40x = 419,955.60 × 159,904.10
  4. Step 4: Simplify right side
    279,970.40x = 67,152,622,257.96
  5. Step 5: Solve for x
    x = 67,152,622,257.96/279,970.40
  6. Step 6: Final answer
    x = 239,856.15

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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.