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Finding the Fourth Proportional to 489,232.80, 733,849.20 and 355,831.20

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Solution

The fourth proportional to 489,232.80, 733,849.20 and 355,831.20 is: 533,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,232.80 : 733,849.20 = 355,831.20 : x
  2. Step 2: Convert to fraction form
    489,232.80/733,849.20 = 355,831.20/x
  3. Step 3: Cross multiply
    489,232.80x = 733,849.20 × 355,831.20
  4. Step 4: Simplify right side
    489,232.80x = 261,126,441,455.04
  5. Step 5: Solve for x
    x = 261,126,441,455.04/489,232.80
  6. Step 6: Final answer
    x = 533,746.80

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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.