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Finding the Fourth Proportional to 383,493.62, 530,177.73 and 287,834.24

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Solution

The fourth proportional to 383,493.62, 530,177.73 and 287,834.24 is: 397,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,493.62 : 530,177.73 = 287,834.24 : x
  2. Step 2: Convert to fraction form
    383,493.62/530,177.73 = 287,834.24/x
  3. Step 3: Cross multiply
    383,493.62x = 530,177.73 × 287,834.24
  4. Step 4: Simplify right side
    383,493.62x = 152,603,303,979.48
  5. Step 5: Solve for x
    x = 152,603,303,979.48/383,493.62
  6. Step 6: Final answer
    x = 397,929.19

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1.5x scale

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.