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Finding the Fourth Proportional to 447,617.55, 617,710.45 and 243,679.80

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Solution

The fourth proportional to 447,617.55, 617,710.45 and 243,679.80 is: 336,277.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,617.55 : 617,710.45 = 243,679.80 : x
  2. Step 2: Convert to fraction form
    447,617.55/617,710.45 = 243,679.80/x
  3. Step 3: Cross multiply
    447,617.55x = 617,710.45 × 243,679.80
  4. Step 4: Simplify right side
    447,617.55x = 150,523,558,913.91
  5. Step 5: Solve for x
    x = 150,523,558,913.91/447,617.55
  6. Step 6: Final answer
    x = 336,277.16

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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.