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Finding the Fourth Proportional to 347,624.25, 479,721.47 and 188,648.25

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Solution

The fourth proportional to 347,624.25, 479,721.47 and 188,648.25 is: 260,334.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,624.25 : 479,721.47 = 188,648.25 : x
  2. Step 2: Convert to fraction form
    347,624.25/479,721.47 = 188,648.25/x
  3. Step 3: Cross multiply
    347,624.25x = 479,721.47 × 188,648.25
  4. Step 4: Simplify right side
    347,624.25x = 90,498,614,859.69
  5. Step 5: Solve for x
    x = 90,498,614,859.69/347,624.25
  6. Step 6: Final answer
    x = 260,334.59

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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.