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Finding the Fourth Proportional to 613,725.62, 920,687.61 and 181,486.94

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Solution

The fourth proportional to 613,725.62, 920,687.61 and 181,486.94 is: 272,259.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,725.62 : 920,687.61 = 181,486.94 : x
  2. Step 2: Convert to fraction form
    613,725.62/920,687.61 = 181,486.94/x
  3. Step 3: Cross multiply
    613,725.62x = 920,687.61 × 181,486.94
  4. Step 4: Simplify right side
    613,725.62x = 167,092,777,034.81
  5. Step 5: Solve for x
    x = 167,092,777,034.81/613,725.62
  6. Step 6: Final answer
    x = 272,259.74

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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.