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Finding the Fourth Proportional to 447,369.96, 617,387.58 and 256,420.20

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Solution

The fourth proportional to 447,369.96, 617,387.58 and 256,420.20 is: 353,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,369.96 : 617,387.58 = 256,420.20 : x
  2. Step 2: Convert to fraction form
    447,369.96/617,387.58 = 256,420.20/x
  3. Step 3: Cross multiply
    447,369.96x = 617,387.58 × 256,420.20
  4. Step 4: Simplify right side
    447,369.96x = 158,310,646,741.12
  5. Step 5: Solve for x
    x = 158,310,646,741.12/447,369.96
  6. Step 6: Final answer
    x = 353,869.64

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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.