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Finding the Fourth Proportional to 447,377.72, 617,395.78 and 256,427.10

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Solution

The fourth proportional to 447,377.72, 617,395.78 and 256,427.10 is: 353,877.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,377.72 : 617,395.78 = 256,427.10 : x
  2. Step 2: Convert to fraction form
    447,377.72/617,395.78 = 256,427.10/x
  3. Step 3: Cross multiply
    447,377.72x = 617,395.78 × 256,427.10
  4. Step 4: Simplify right side
    447,377.72x = 158,317,009,417.64
  5. Step 5: Solve for x
    x = 158,317,009,417.64/447,377.72
  6. Step 6: Final answer
    x = 353,877.72

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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.