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Finding the Fourth Proportional to 308,014.02, 425,046.65 and 172,047.32

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Solution

The fourth proportional to 308,014.02, 425,046.65 and 172,047.32 is: 237,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,014.02 : 425,046.65 = 172,047.32 : x
  2. Step 2: Convert to fraction form
    308,014.02/425,046.65 = 172,047.32/x
  3. Step 3: Cross multiply
    308,014.02x = 425,046.65 × 172,047.32
  4. Step 4: Simplify right side
    308,014.02x = 73,128,134,882.24
  5. Step 5: Solve for x
    x = 73,128,134,882.24/308,014.02
  6. Step 6: Final answer
    x = 237,418.21

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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.