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Finding the Fourth Proportional to 318,653.90, 439,747.97 and 173,463.84

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Solution

The fourth proportional to 318,653.90, 439,747.97 and 173,463.84 is: 239,383.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,653.90 : 439,747.97 = 173,463.84 : x
  2. Step 2: Convert to fraction form
    318,653.90/439,747.97 = 173,463.84/x
  3. Step 3: Cross multiply
    318,653.90x = 439,747.97 × 173,463.84
  4. Step 4: Simplify right side
    318,653.90x = 76,280,370,641.09
  5. Step 5: Solve for x
    x = 76,280,370,641.09/318,653.90
  6. Step 6: Final answer
    x = 239,383.14

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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.