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Finding the Fourth Proportional to 661,578.59, 992,100.74 and 256,557.53

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Solution

The fourth proportional to 661,578.59, 992,100.74 and 256,557.53 is: 384,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,578.59 : 992,100.74 = 256,557.53 : x
  2. Step 2: Convert to fraction form
    661,578.59/992,100.74 = 256,557.53/x
  3. Step 3: Cross multiply
    661,578.59x = 992,100.74 × 256,557.53
  4. Step 4: Simplify right side
    661,578.59x = 254,530,909,122.28
  5. Step 5: Solve for x
    x = 254,530,909,122.28/661,578.59
  6. Step 6: Final answer
    x = 384,732.69

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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.