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Finding the Fourth Proportional to 390,939.41, 586,277.89 and 248,696.93

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Solution

The fourth proportional to 390,939.41, 586,277.89 and 248,696.93 is: 372,961.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,939.41 : 586,277.89 = 248,696.93 : x
  2. Step 2: Convert to fraction form
    390,939.41/586,277.89 = 248,696.93/x
  3. Step 3: Cross multiply
    390,939.41x = 586,277.89 × 248,696.93
  4. Step 4: Simplify right side
    390,939.41x = 145,805,511,369.88
  5. Step 5: Solve for x
    x = 145,805,511,369.88/390,939.41
  6. Step 6: Final answer
    x = 372,961.92

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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.