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Finding the Fourth Proportional to 391,029.84, 586,571.39 and 124,810.40

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Solution

The fourth proportional to 391,029.84, 586,571.39 and 124,810.40 is: 187,224.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,029.84 : 586,571.39 = 124,810.40 : x
  2. Step 2: Convert to fraction form
    391,029.84/586,571.39 = 124,810.40/x
  3. Step 3: Cross multiply
    391,029.84x = 586,571.39 × 124,810.40
  4. Step 4: Simplify right side
    391,029.84x = 73,210,206,257.55
  5. Step 5: Solve for x
    x = 73,210,206,257.55/391,029.84
  6. Step 6: Final answer
    x = 187,224.09

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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.