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Finding the Fourth Proportional to 451,620.42, 623,244.74 and 247,658.40

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Solution

The fourth proportional to 451,620.42, 623,244.74 and 247,658.40 is: 341,773.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,620.42 : 623,244.74 = 247,658.40 : x
  2. Step 2: Convert to fraction form
    451,620.42/623,244.74 = 247,658.40/x
  3. Step 3: Cross multiply
    451,620.42x = 623,244.74 × 247,658.40
  4. Step 4: Simplify right side
    451,620.42x = 154,351,793,878.52
  5. Step 5: Solve for x
    x = 154,351,793,878.52/451,620.42
  6. Step 6: Final answer
    x = 341,773.28

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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.