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Finding the Fourth Proportional to 403,221.30, 604,831.95 and 285,123.30

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Solution

The fourth proportional to 403,221.30, 604,831.95 and 285,123.30 is: 427,684.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,221.30 : 604,831.95 = 285,123.30 : x
  2. Step 2: Convert to fraction form
    403,221.30/604,831.95 = 285,123.30/x
  3. Step 3: Cross multiply
    403,221.30x = 604,831.95 × 285,123.30
  4. Step 4: Simplify right side
    403,221.30x = 172,451,681,529.44
  5. Step 5: Solve for x
    x = 172,451,681,529.44/403,221.30
  6. Step 6: Final answer
    x = 427,684.95

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Similar ratio
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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.