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Finding the Fourth Proportional to 409,326.11, 613,310.38 and 248,916.81

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Solution

The fourth proportional to 409,326.11, 613,310.38 and 248,916.81 is: 372,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,326.11 : 613,310.38 = 248,916.81 : x
  2. Step 2: Convert to fraction form
    409,326.11/613,310.38 = 248,916.81/x
  3. Step 3: Cross multiply
    409,326.11x = 613,310.38 × 248,916.81
  4. Step 4: Simplify right side
    409,326.11x = 152,663,265,790.59
  5. Step 5: Solve for x
    x = 152,663,265,790.59/409,326.11
  6. Step 6: Final answer
    x = 372,962.45

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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.