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Finding the Fourth Proportional to 308,006.02, 425,043.81 and 172,041.92

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Solution

The fourth proportional to 308,006.02, 425,043.81 and 172,041.92 is: 237,415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,006.02 : 425,043.81 = 172,041.92 : x
  2. Step 2: Convert to fraction form
    308,006.02/425,043.81 = 172,041.92/x
  3. Step 3: Cross multiply
    308,006.02x = 425,043.81 × 172,041.92
  4. Step 4: Simplify right side
    308,006.02x = 73,125,351,031.30
  5. Step 5: Solve for x
    x = 73,125,351,031.30/308,006.02
  6. Step 6: Final answer
    x = 237,415.33

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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.