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Finding the Fourth Proportional to 407,737.20, 610,396.20 and 303,020.40

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Solution

The fourth proportional to 407,737.20, 610,396.20 and 303,020.40 is: 453,631.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,737.20 : 610,396.20 = 303,020.40 : x
  2. Step 2: Convert to fraction form
    407,737.20/610,396.20 = 303,020.40/x
  3. Step 3: Cross multiply
    407,737.20x = 610,396.20 × 303,020.40
  4. Step 4: Simplify right side
    407,737.20x = 184,962,500,682.48
  5. Step 5: Solve for x
    x = 184,962,500,682.48/407,737.20
  6. Step 6: Final answer
    x = 453,631.65

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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.