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Finding the Fourth Proportional to 447,616.55, 617,709.08 and 243,678.80

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Solution

The fourth proportional to 447,616.55, 617,709.08 and 243,678.80 is: 336,275.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,616.55 : 617,709.08 = 243,678.80 : x
  2. Step 2: Convert to fraction form
    447,616.55/617,709.08 = 243,678.80/x
  3. Step 3: Cross multiply
    447,616.55x = 617,709.08 × 243,678.80
  4. Step 4: Simplify right side
    447,616.55x = 150,522,603,056.57
  5. Step 5: Solve for x
    x = 150,522,603,056.57/447,616.55
  6. Step 6: Final answer
    x = 336,275.78

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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.