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Finding the Fourth Proportional to 307,863.64, 424,731.90 and 207,328.60

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Solution

The fourth proportional to 307,863.64, 424,731.90 and 207,328.60 is: 286,032.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,863.64 : 424,731.90 = 207,328.60 : x
  2. Step 2: Convert to fraction form
    307,863.64/424,731.90 = 207,328.60/x
  3. Step 3: Cross multiply
    307,863.64x = 424,731.90 × 207,328.60
  4. Step 4: Simplify right side
    307,863.64x = 88,059,070,202.34
  5. Step 5: Solve for x
    x = 88,059,070,202.34/307,863.64
  6. Step 6: Final answer
    x = 286,032.71

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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.