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Finding the Fourth Proportional to 308,002.54, 425,038.96 and 172,038.38

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Solution

The fourth proportional to 308,002.54, 425,038.96 and 172,038.38 is: 237,410.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,002.54 : 425,038.96 = 172,038.38 : x
  2. Step 2: Convert to fraction form
    308,002.54/425,038.96 = 172,038.38/x
  3. Step 3: Cross multiply
    308,002.54x = 425,038.96 × 172,038.38
  4. Step 4: Simplify right side
    308,002.54x = 73,123,014,115.28
  5. Step 5: Solve for x
    x = 73,123,014,115.28/308,002.54
  6. Step 6: Final answer
    x = 237,410.43

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1.5x scale

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.