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Finding the Fourth Proportional to 308,895.02, 426,251.58 and 172,897.82

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Solution

The fourth proportional to 308,895.02, 426,251.58 and 172,897.82 is: 238,585.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,895.02 : 426,251.58 = 172,897.82 : x
  2. Step 2: Convert to fraction form
    308,895.02/426,251.58 = 172,897.82/x
  3. Step 3: Cross multiply
    308,895.02x = 426,251.58 × 172,897.82
  4. Step 4: Simplify right side
    308,895.02x = 73,697,968,953.56
  5. Step 5: Solve for x
    x = 73,697,968,953.56/308,895.02
  6. Step 6: Final answer
    x = 238,585.81

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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.