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Finding the Fourth Proportional to 384,356.80, 576,535.20 and 207,209.80

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Solution

The fourth proportional to 384,356.80, 576,535.20 and 207,209.80 is: 310,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,356.80 : 576,535.20 = 207,209.80 : x
  2. Step 2: Convert to fraction form
    384,356.80/576,535.20 = 207,209.80/x
  3. Step 3: Cross multiply
    384,356.80x = 576,535.20 × 207,209.80
  4. Step 4: Simplify right side
    384,356.80x = 119,463,743,484.96
  5. Step 5: Solve for x
    x = 119,463,743,484.96/384,356.80
  6. Step 6: Final answer
    x = 310,814.70

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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.