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Finding the Fourth Proportional to 243,220.80, 364,831.20 and 219,601.20

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Solution

The fourth proportional to 243,220.80, 364,831.20 and 219,601.20 is: 329,401.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,220.80 : 364,831.20 = 219,601.20 : x
  2. Step 2: Convert to fraction form
    243,220.80/364,831.20 = 219,601.20/x
  3. Step 3: Cross multiply
    243,220.80x = 364,831.20 × 219,601.20
  4. Step 4: Simplify right side
    243,220.80x = 80,117,369,317.44
  5. Step 5: Solve for x
    x = 80,117,369,317.44/243,220.80
  6. Step 6: Final answer
    x = 329,401.80

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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.