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Finding the Fourth Proportional to 484,686.50, 668,431.98 and 303,414.98

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Solution

The fourth proportional to 484,686.50, 668,431.98 and 303,414.98 is: 418,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,686.50 : 668,431.98 = 303,414.98 : x
  2. Step 2: Convert to fraction form
    484,686.50/668,431.98 = 303,414.98/x
  3. Step 3: Cross multiply
    484,686.50x = 668,431.98 × 303,414.98
  4. Step 4: Simplify right side
    484,686.50x = 202,812,272,500.90
  5. Step 5: Solve for x
    x = 202,812,272,500.90/484,686.50
  6. Step 6: Final answer
    x = 418,440.11

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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.