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Finding the Fourth Proportional to 347,869.80, 521,807.90 and 181,981.80

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Solution

The fourth proportional to 347,869.80, 521,807.90 and 181,981.80 is: 272,974.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,869.80 : 521,807.90 = 181,981.80 : x
  2. Step 2: Convert to fraction form
    347,869.80/521,807.90 = 181,981.80/x
  3. Step 3: Cross multiply
    347,869.80x = 521,807.90 × 181,981.80
  4. Step 4: Simplify right side
    347,869.80x = 94,959,540,896.22
  5. Step 5: Solve for x
    x = 94,959,540,896.22/347,869.80
  6. Step 6: Final answer
    x = 272,974.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.