Home / 447,288.09-617,243.49-243,333.78

Finding the Fourth Proportional to 447,288.09, 617,243.49 and 243,333.78

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Solution

The fourth proportional to 447,288.09, 617,243.49 and 243,333.78 is: 335,792.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,288.09 : 617,243.49 = 243,333.78 : x
  2. Step 2: Convert to fraction form
    447,288.09/617,243.49 = 243,333.78/x
  3. Step 3: Cross multiply
    447,288.09x = 617,243.49 × 243,333.78
  4. Step 4: Simplify right side
    447,288.09x = 150,196,191,602.09
  5. Step 5: Solve for x
    x = 150,196,191,602.09/447,288.09
  6. Step 6: Final answer
    x = 335,792.96

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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.