Home / 447,381.72-617,401.35-256,431.15

Finding the Fourth Proportional to 447,381.72, 617,401.35 and 256,431.15

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Solution

The fourth proportional to 447,381.72, 617,401.35 and 256,431.15 is: 353,883.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,381.72 : 617,401.35 = 256,431.15 : x
  2. Step 2: Convert to fraction form
    447,381.72/617,401.35 = 256,431.15/x
  3. Step 3: Cross multiply
    447,381.72x = 617,401.35 × 256,431.15
  4. Step 4: Simplify right side
    447,381.72x = 158,320,938,192.05
  5. Step 5: Solve for x
    x = 158,320,938,192.05/447,381.72
  6. Step 6: Final answer
    x = 353,883.34

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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.