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Finding the Fourth Proportional to 308,776.26, 426,130.00 and 172,807.37

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Solution

The fourth proportional to 308,776.26, 426,130.00 and 172,807.37 is: 238,484.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,776.26 : 426,130.00 = 172,807.37 : x
  2. Step 2: Convert to fraction form
    308,776.26/426,130.00 = 172,807.37/x
  3. Step 3: Cross multiply
    308,776.26x = 426,130.00 × 172,807.37
  4. Step 4: Simplify right side
    308,776.26x = 73,638,405,211.41
  5. Step 5: Solve for x
    x = 73,638,405,211.41/308,776.26
  6. Step 6: Final answer
    x = 238,484.68

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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.