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Finding the Fourth Proportional to 355,423.27, 490,487.41 and 202,459.27

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Solution

The fourth proportional to 355,423.27, 490,487.41 and 202,459.27 is: 279,395.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,423.27 : 490,487.41 = 202,459.27 : x
  2. Step 2: Convert to fraction form
    355,423.27/490,487.41 = 202,459.27/x
  3. Step 3: Cross multiply
    355,423.27x = 490,487.41 × 202,459.27
  4. Step 4: Simplify right side
    355,423.27x = 99,303,722,972.79
  5. Step 5: Solve for x
    x = 99,303,722,972.79/355,423.27
  6. Step 6: Final answer
    x = 279,395.67

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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.