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Finding the Fourth Proportional to 308,827.69, 426,182.11 and 172,861.59

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Solution

The fourth proportional to 308,827.69, 426,182.11 and 172,861.59 is: 238,548.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,827.69 : 426,182.11 = 172,861.59 : x
  2. Step 2: Convert to fraction form
    308,827.69/426,182.11 = 172,861.59/x
  3. Step 3: Cross multiply
    308,827.69x = 426,182.11 × 172,861.59
  4. Step 4: Simplify right side
    308,827.69x = 73,670,518,330.18
  5. Step 5: Solve for x
    x = 73,670,518,330.18/308,827.69
  6. Step 6: Final answer
    x = 238,548.94

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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.