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Finding the Fourth Proportional to 383,320.49, 528,994.22 and 220,006.71

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Solution

The fourth proportional to 383,320.49, 528,994.22 and 220,006.71 is: 303,616.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,320.49 : 528,994.22 = 220,006.71 : x
  2. Step 2: Convert to fraction form
    383,320.49/528,994.22 = 220,006.71/x
  3. Step 3: Cross multiply
    383,320.49x = 528,994.22 × 220,006.71
  4. Step 4: Simplify right side
    383,320.49x = 116,382,276,851.18
  5. Step 5: Solve for x
    x = 116,382,276,851.18/383,320.49
  6. Step 6: Final answer
    x = 303,616.12

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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.