Home / 347,389.20-479,405.70-194,426.10

Finding the Fourth Proportional to 347,389.20, 479,405.70 and 194,426.10

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Solution

The fourth proportional to 347,389.20, 479,405.70 and 194,426.10 is: 268,312.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,389.20 : 479,405.70 = 194,426.10 : x
  2. Step 2: Convert to fraction form
    347,389.20/479,405.70 = 194,426.10/x
  3. Step 3: Cross multiply
    347,389.20x = 479,405.70 × 194,426.10
  4. Step 4: Simplify right side
    347,389.20x = 93,208,980,568.77
  5. Step 5: Solve for x
    x = 93,208,980,568.77/347,389.20
  6. Step 6: Final answer
    x = 268,312.83

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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.