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Finding the Fourth Proportional to 279,445.60, 419,168.40 and 89,905.60

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Solution

The fourth proportional to 279,445.60, 419,168.40 and 89,905.60 is: 134,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,445.60 : 419,168.40 = 89,905.60 : x
  2. Step 2: Convert to fraction form
    279,445.60/419,168.40 = 89,905.60/x
  3. Step 3: Cross multiply
    279,445.60x = 419,168.40 × 89,905.60
  4. Step 4: Simplify right side
    279,445.60x = 37,685,586,503.04
  5. Step 5: Solve for x
    x = 37,685,586,503.04/279,445.60
  6. Step 6: Final answer
    x = 134,858.40

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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.