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Finding the Fourth Proportional to 356,831.08, 535,246.86 and 90,611.56

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Solution

The fourth proportional to 356,831.08, 535,246.86 and 90,611.56 is: 135,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,831.08 : 535,246.86 = 90,611.56 : x
  2. Step 2: Convert to fraction form
    356,831.08/535,246.86 = 90,611.56/x
  3. Step 3: Cross multiply
    356,831.08x = 535,246.86 × 90,611.56
  4. Step 4: Simplify right side
    356,831.08x = 48,499,552,969.70
  5. Step 5: Solve for x
    x = 48,499,552,969.70/356,831.08
  6. Step 6: Final answer
    x = 135,917.40

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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.