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Finding the Fourth Proportional to 279,544.98, 419,384.50 and 90,023.21

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Solution

The fourth proportional to 279,544.98, 419,384.50 and 90,023.21 is: 135,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,544.98 : 419,384.50 = 90,023.21 : x
  2. Step 2: Convert to fraction form
    279,544.98/419,384.50 = 90,023.21/x
  3. Step 3: Cross multiply
    279,544.98x = 419,384.50 × 90,023.21
  4. Step 4: Simplify right side
    279,544.98x = 37,754,336,817.32
  5. Step 5: Solve for x
    x = 37,754,336,817.32/279,544.98
  6. Step 6: Final answer
    x = 135,056.39

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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.