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Finding the Fourth Proportional to 279,309.64, 419,030.08 and 92,321.14

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Solution

The fourth proportional to 279,309.64, 419,030.08 and 92,321.14 is: 138,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,309.64 : 419,030.08 = 92,321.14 : x
  2. Step 2: Convert to fraction form
    279,309.64/419,030.08 = 92,321.14/x
  3. Step 3: Cross multiply
    279,309.64x = 419,030.08 × 92,321.14
  4. Step 4: Simplify right side
    279,309.64x = 38,685,334,679.89
  5. Step 5: Solve for x
    x = 38,685,334,679.89/279,309.64
  6. Step 6: Final answer
    x = 138,503.40

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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.