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Finding the Fourth Proportional to 315,603.20, 472,483.20 and 282,425.60

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Solution

The fourth proportional to 315,603.20, 472,483.20 and 282,425.60 is: 422,813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,603.20 : 472,483.20 = 282,425.60 : x
  2. Step 2: Convert to fraction form
    315,603.20/472,483.20 = 282,425.60/x
  3. Step 3: Cross multiply
    315,603.20x = 472,483.20 × 282,425.60
  4. Step 4: Simplify right side
    315,603.20x = 133,441,351,249.92
  5. Step 5: Solve for x
    x = 133,441,351,249.92/315,603.20
  6. Step 6: Final answer
    x = 422,813.68

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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.