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Finding the Fourth Proportional to 447,587.12, 617,683.12 and 243,651.20

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Solution

The fourth proportional to 447,587.12, 617,683.12 and 243,651.20 is: 336,245.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,587.12 : 617,683.12 = 243,651.20 : x
  2. Step 2: Convert to fraction form
    447,587.12/617,683.12 = 243,651.20/x
  3. Step 3: Cross multiply
    447,587.12x = 617,683.12 × 243,651.20
  4. Step 4: Simplify right side
    447,587.12x = 150,499,233,407.74
  5. Step 5: Solve for x
    x = 150,499,233,407.74/447,587.12
  6. Step 6: Final answer
    x = 336,245.68

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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.