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Finding the Fourth Proportional to 447,406.61, 617,410.89 and 243,458.06

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Solution

The fourth proportional to 447,406.61, 617,410.89 and 243,458.06 is: 335,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,406.61 : 617,410.89 = 243,458.06 : x
  2. Step 2: Convert to fraction form
    447,406.61/617,410.89 = 243,458.06/x
  3. Step 3: Cross multiply
    447,406.61x = 617,410.89 × 243,458.06
  4. Step 4: Simplify right side
    447,406.61x = 150,313,654,415.22
  5. Step 5: Solve for x
    x = 150,313,654,415.22/447,406.61
  6. Step 6: Final answer
    x = 335,966.55

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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.