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Finding the Fourth Proportional to 384,725.20, 577,087.80 and 291,413.20

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Solution

The fourth proportional to 384,725.20, 577,087.80 and 291,413.20 is: 437,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,725.20 : 577,087.80 = 291,413.20 : x
  2. Step 2: Convert to fraction form
    384,725.20/577,087.80 = 291,413.20/x
  3. Step 3: Cross multiply
    384,725.20x = 577,087.80 × 291,413.20
  4. Step 4: Simplify right side
    384,725.20x = 168,171,002,478.96
  5. Step 5: Solve for x
    x = 168,171,002,478.96/384,725.20
  6. Step 6: Final answer
    x = 437,119.80

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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.