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Finding the Fourth Proportional to 402,866.05, 603,132.60 and 303,445.03

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Solution

The fourth proportional to 402,866.05, 603,132.60 and 303,445.03 is: 454,288.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,866.05 : 603,132.60 = 303,445.03 : x
  2. Step 2: Convert to fraction form
    402,866.05/603,132.60 = 303,445.03/x
  3. Step 3: Cross multiply
    402,866.05x = 603,132.60 × 303,445.03
  4. Step 4: Simplify right side
    402,866.05x = 183,017,589,900.98
  5. Step 5: Solve for x
    x = 183,017,589,900.98/402,866.05
  6. Step 6: Final answer
    x = 454,288.94

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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.