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Finding the Fourth Proportional to 447,619.64, 617,695.80 and 243,670.88

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Solution

The fourth proportional to 447,619.64, 617,695.80 and 243,670.88 is: 336,255.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,619.64 : 617,695.80 = 243,670.88 : x
  2. Step 2: Convert to fraction form
    447,619.64/617,695.80 = 243,670.88/x
  3. Step 3: Cross multiply
    447,619.64x = 617,695.80 × 243,670.88
  4. Step 4: Simplify right side
    447,619.64x = 150,514,479,158.30
  5. Step 5: Solve for x
    x = 150,514,479,158.30/447,619.64
  6. Step 6: Final answer
    x = 336,255.31

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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.