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Finding the Fourth Proportional to 293,856.60, 440,784.90 and 279,341.40

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Solution

The fourth proportional to 293,856.60, 440,784.90 and 279,341.40 is: 419,012.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,856.60 : 440,784.90 = 279,341.40 : x
  2. Step 2: Convert to fraction form
    293,856.60/440,784.90 = 279,341.40/x
  3. Step 3: Cross multiply
    293,856.60x = 440,784.90 × 279,341.40
  4. Step 4: Simplify right side
    293,856.60x = 123,129,471,064.86
  5. Step 5: Solve for x
    x = 123,129,471,064.86/293,856.60
  6. Step 6: Final answer
    x = 419,012.10

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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.