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Finding the Fourth Proportional to 279,519.90, 419,150.76 and 89,944.98

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Solution

The fourth proportional to 279,519.90, 419,150.76 and 89,944.98 is: 134,875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,519.90 : 419,150.76 = 89,944.98 : x
  2. Step 2: Convert to fraction form
    279,519.90/419,150.76 = 89,944.98/x
  3. Step 3: Cross multiply
    279,519.90x = 419,150.76 × 89,944.98
  4. Step 4: Simplify right side
    279,519.90x = 37,700,506,725.18
  5. Step 5: Solve for x
    x = 37,700,506,725.18/279,519.90
  6. Step 6: Final answer
    x = 134,875.93

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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.