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Finding the Fourth Proportional to 407,731.20, 610,387.20 and 303,014.40

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Solution

The fourth proportional to 407,731.20, 610,387.20 and 303,014.40 is: 453,622.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,731.20 : 610,387.20 = 303,014.40 : x
  2. Step 2: Convert to fraction form
    407,731.20/610,387.20 = 303,014.40/x
  3. Step 3: Cross multiply
    407,731.20x = 610,387.20 × 303,014.40
  4. Step 4: Simplify right side
    407,731.20x = 184,956,111,175.68
  5. Step 5: Solve for x
    x = 184,956,111,175.68/407,731.20
  6. Step 6: Final answer
    x = 453,622.66

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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.