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Finding the Fourth Proportional to 447,369.74, 617,351.66 and 243,421.46

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Solution

The fourth proportional to 447,369.74, 617,351.66 and 243,421.46 is: 335,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,369.74 : 617,351.66 = 243,421.46 : x
  2. Step 2: Convert to fraction form
    447,369.74/617,351.66 = 243,421.46/x
  3. Step 3: Cross multiply
    447,369.74x = 617,351.66 × 243,421.46
  4. Step 4: Simplify right side
    447,369.74x = 150,276,642,410.62
  5. Step 5: Solve for x
    x = 150,276,642,410.62/447,369.74
  6. Step 6: Final answer
    x = 335,911.50

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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.