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Finding the Fourth Proportional to 447,390.88, 617,424.96 and 256,436.08

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Solution

The fourth proportional to 447,390.88, 617,424.96 and 256,436.08 is: 353,896.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,390.88 : 617,424.96 = 256,436.08 : x
  2. Step 2: Convert to fraction form
    447,390.88/617,424.96 = 256,436.08/x
  3. Step 3: Cross multiply
    447,390.88x = 617,424.96 × 256,436.08
  4. Step 4: Simplify right side
    447,390.88x = 158,330,036,436.56
  5. Step 5: Solve for x
    x = 158,330,036,436.56/447,390.88
  6. Step 6: Final answer
    x = 353,896.43

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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.