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Finding the Fourth Proportional to 366,831.60, 506,232.78 and 221,617.20

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Solution

The fourth proportional to 366,831.60, 506,232.78 and 221,617.20 is: 305,834.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,831.60 : 506,232.78 = 221,617.20 : x
  2. Step 2: Convert to fraction form
    366,831.60/506,232.78 = 221,617.20/x
  3. Step 3: Cross multiply
    366,831.60x = 506,232.78 × 221,617.20
  4. Step 4: Simplify right side
    366,831.60x = 112,189,891,251.82
  5. Step 5: Solve for x
    x = 112,189,891,251.82/366,831.60
  6. Step 6: Final answer
    x = 305,834.86

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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.