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Finding the Fourth Proportional to 439,491.76, 659,019.54 and 139,933.32

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Solution

The fourth proportional to 439,491.76, 659,019.54 and 139,933.32 is: 209,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,491.76 : 659,019.54 = 139,933.32 : x
  2. Step 2: Convert to fraction form
    439,491.76/659,019.54 = 139,933.32/x
  3. Step 3: Cross multiply
    439,491.76x = 659,019.54 × 139,933.32
  4. Step 4: Simplify right side
    439,491.76x = 92,218,792,177.07
  5. Step 5: Solve for x
    x = 92,218,792,177.07/439,491.76
  6. Step 6: Final answer
    x = 209,830.54

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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.