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Finding the Fourth Proportional to 308,094.20, 425,165.18 and 172,130.02

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Solution

The fourth proportional to 308,094.20, 425,165.18 and 172,130.02 is: 237,536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,094.20 : 425,165.18 = 172,130.02 : x
  2. Step 2: Convert to fraction form
    308,094.20/425,165.18 = 172,130.02/x
  3. Step 3: Cross multiply
    308,094.20x = 425,165.18 × 172,130.02
  4. Step 4: Simplify right side
    308,094.20x = 73,183,690,936.70
  5. Step 5: Solve for x
    x = 73,183,690,936.70/308,094.20
  6. Step 6: Final answer
    x = 237,536.74

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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.