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Finding the Fourth Proportional to 407,056.47, 610,149.65 and 217,399.83

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Solution

The fourth proportional to 407,056.47, 610,149.65 and 217,399.83 is: 325,867.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,056.47 : 610,149.65 = 217,399.83 : x
  2. Step 2: Convert to fraction form
    407,056.47/610,149.65 = 217,399.83/x
  3. Step 3: Cross multiply
    407,056.47x = 610,149.65 × 217,399.83
  4. Step 4: Simplify right side
    407,056.47x = 132,646,429,097.56
  5. Step 5: Solve for x
    x = 132,646,429,097.56/407,056.47
  6. Step 6: Final answer
    x = 325,867.39

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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.