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Finding the Fourth Proportional to 487,940.09, 731,728.08 and 168,001.56

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Solution

The fourth proportional to 487,940.09, 731,728.08 and 168,001.56 is: 251,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,940.09 : 731,728.08 = 168,001.56 : x
  2. Step 2: Convert to fraction form
    487,940.09/731,728.08 = 168,001.56/x
  3. Step 3: Cross multiply
    487,940.09x = 731,728.08 × 168,001.56
  4. Step 4: Simplify right side
    487,940.09x = 122,931,458,935.81
  5. Step 5: Solve for x
    x = 122,931,458,935.81/487,940.09
  6. Step 6: Final answer
    x = 251,939.66

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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.