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Finding the Fourth Proportional to 365,374.65, 503,758.18 and 279,439.05

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Solution

The fourth proportional to 365,374.65, 503,758.18 and 279,439.05 is: 385,274.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,374.65 : 503,758.18 = 279,439.05 : x
  2. Step 2: Convert to fraction form
    365,374.65/503,758.18 = 279,439.05/x
  3. Step 3: Cross multiply
    365,374.65x = 503,758.18 × 279,439.05
  4. Step 4: Simplify right side
    365,374.65x = 140,769,704,730.14
  5. Step 5: Solve for x
    x = 140,769,704,730.14/365,374.65
  6. Step 6: Final answer
    x = 385,274.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.