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Finding the Fourth Proportional to 307,866.64, 424,736.04 and 207,331.60

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Solution

The fourth proportional to 307,866.64, 424,736.04 and 207,331.60 is: 286,036.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,866.64 : 424,736.04 = 207,331.60 : x
  2. Step 2: Convert to fraction form
    307,866.64/424,736.04 = 207,331.60/x
  3. Step 3: Cross multiply
    307,866.64x = 424,736.04 × 207,331.60
  4. Step 4: Simplify right side
    307,866.64x = 88,061,202,750.86
  5. Step 5: Solve for x
    x = 88,061,202,750.86/307,866.64
  6. Step 6: Final answer
    x = 286,036.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.