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Finding the Fourth Proportional to 365,378.01, 503,762.82 and 279,442.41

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Solution

The fourth proportional to 365,378.01, 503,762.82 and 279,442.41 is: 385,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,378.01 : 503,762.82 = 279,442.41 : x
  2. Step 2: Convert to fraction form
    365,378.01/503,762.82 = 279,442.41/x
  3. Step 3: Cross multiply
    365,378.01x = 503,762.82 × 279,442.41
  4. Step 4: Simplify right side
    365,378.01x = 140,772,696,489.20
  5. Step 5: Solve for x
    x = 140,772,696,489.20/365,378.01
  6. Step 6: Final answer
    x = 385,279.61

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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.