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Finding the Fourth Proportional to 345,928, 518,896.32 and 124,312

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Solution

The fourth proportional to 345,928, 518,896.32 and 124,312 is: 186,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,928 : 518,896.32 = 124,312 : x
  2. Step 2: Convert to fraction form
    345,928/518,896.32 = 124,312/x
  3. Step 3: Cross multiply
    345,928x = 518,896.32 × 124,312
  4. Step 4: Simplify right side
    345,928x = 64,505,039,331.84
  5. Step 5: Solve for x
    x = 64,505,039,331.84/345,928
  6. Step 6: Final answer
    x = 186,469.55

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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.