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Finding the Fourth Proportional to 402,205.55, 603,299.10 and 202,472.30

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Solution

The fourth proportional to 402,205.55, 603,299.10 and 202,472.30 is: 303,703.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,205.55 : 603,299.10 = 202,472.30 : x
  2. Step 2: Convert to fraction form
    402,205.55/603,299.10 = 202,472.30/x
  3. Step 3: Cross multiply
    402,205.55x = 603,299.10 × 202,472.30
  4. Step 4: Simplify right side
    402,205.55x = 122,151,356,364.93
  5. Step 5: Solve for x
    x = 122,151,356,364.93/402,205.55
  6. Step 6: Final answer
    x = 303,703.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.