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Finding the Fourth Proportional to 391,515.81, 586,509.09 and 269,914.82

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Solution

The fourth proportional to 391,515.81, 586,509.09 and 269,914.82 is: 404,345.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,515.81 : 586,509.09 = 269,914.82 : x
  2. Step 2: Convert to fraction form
    391,515.81/586,509.09 = 269,914.82/x
  3. Step 3: Cross multiply
    391,515.81x = 586,509.09 × 269,914.82
  4. Step 4: Simplify right side
    391,515.81x = 158,307,492,523.17
  5. Step 5: Solve for x
    x = 158,307,492,523.17/391,515.81
  6. Step 6: Final answer
    x = 404,345.08

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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.