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Finding the Fourth Proportional to 432,831.30, 649,246.95 and 266,712.90

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Solution

The fourth proportional to 432,831.30, 649,246.95 and 266,712.90 is: 400,069.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,831.30 : 649,246.95 = 266,712.90 : x
  2. Step 2: Convert to fraction form
    432,831.30/649,246.95 = 266,712.90/x
  3. Step 3: Cross multiply
    432,831.30x = 649,246.95 × 266,712.90
  4. Step 4: Simplify right side
    432,831.30x = 173,162,536,850.66
  5. Step 5: Solve for x
    x = 173,162,536,850.66/432,831.30
  6. Step 6: Final answer
    x = 400,069.35

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Similar ratio
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1.5x scale

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.