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Finding the Fourth Proportional to 347,599.50, 479,687.31 and 188,623.50

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Solution

The fourth proportional to 347,599.50, 479,687.31 and 188,623.50 is: 260,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,599.50 : 479,687.31 = 188,623.50 : x
  2. Step 2: Convert to fraction form
    347,599.50/479,687.31 = 188,623.50/x
  3. Step 3: Cross multiply
    347,599.50x = 479,687.31 × 188,623.50
  4. Step 4: Simplify right side
    347,599.50x = 90,480,299,317.79
  5. Step 5: Solve for x
    x = 90,480,299,317.79/347,599.50
  6. Step 6: Final answer
    x = 260,300.43

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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.