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Finding the Fourth Proportional to 402,475.70, 603,786.45 and 202,292.30

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Solution

The fourth proportional to 402,475.70, 603,786.45 and 202,292.30 is: 303,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,475.70 : 603,786.45 = 202,292.30 : x
  2. Step 2: Convert to fraction form
    402,475.70/603,786.45 = 202,292.30/x
  3. Step 3: Cross multiply
    402,475.70x = 603,786.45 × 202,292.30
  4. Step 4: Simplify right side
    402,475.70x = 122,141,349,679.34
  5. Step 5: Solve for x
    x = 122,141,349,679.34/402,475.70
  6. Step 6: Final answer
    x = 303,475.09

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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.