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Finding the Fourth Proportional to 407,224.20, 612,002.70 and 355,902.60

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Solution

The fourth proportional to 407,224.20, 612,002.70 and 355,902.60 is: 534,873.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,224.20 : 612,002.70 = 355,902.60 : x
  2. Step 2: Convert to fraction form
    407,224.20/612,002.70 = 355,902.60/x
  3. Step 3: Cross multiply
    407,224.20x = 612,002.70 × 355,902.60
  4. Step 4: Simplify right side
    407,224.20x = 217,813,352,137.02
  5. Step 5: Solve for x
    x = 217,813,352,137.02/407,224.20
  6. Step 6: Final answer
    x = 534,873.30

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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.