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Finding the Fourth Proportional to 347,682.40, 479,812.30 and 194,720.20

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Solution

The fourth proportional to 347,682.40, 479,812.30 and 194,720.20 is: 268,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,682.40 : 479,812.30 = 194,720.20 : x
  2. Step 2: Convert to fraction form
    347,682.40/479,812.30 = 194,720.20/x
  3. Step 3: Cross multiply
    347,682.40x = 479,812.30 × 194,720.20
  4. Step 4: Simplify right side
    347,682.40x = 93,429,147,018.46
  5. Step 5: Solve for x
    x = 93,429,147,018.46/347,682.40
  6. Step 6: Final answer
    x = 268,719.81

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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.