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Finding the Fourth Proportional to 388,530.81, 582,776.78 and 108,050.49

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Solution

The fourth proportional to 388,530.81, 582,776.78 and 108,050.49 is: 162,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530.81 : 582,776.78 = 108,050.49 : x
  2. Step 2: Convert to fraction form
    388,530.81/582,776.78 = 108,050.49/x
  3. Step 3: Cross multiply
    388,530.81x = 582,776.78 × 108,050.49
  4. Step 4: Simplify right side
    388,530.81x = 62,969,316,099.37
  5. Step 5: Solve for x
    x = 62,969,316,099.37/388,530.81
  6. Step 6: Final answer
    x = 162,070.33

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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.