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Finding the Fourth Proportional to 342,428, 472,552.26 and 191,525

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Solution

The fourth proportional to 342,428, 472,552.26 and 191,525 is: 264,305.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,428 : 472,552.26 = 191,525 : x
  2. Step 2: Convert to fraction form
    342,428/472,552.26 = 191,525/x
  3. Step 3: Cross multiply
    342,428x = 472,552.26 × 191,525
  4. Step 4: Simplify right side
    342,428x = 90,505,571,596.50
  5. Step 5: Solve for x
    x = 90,505,571,596.50/342,428
  6. Step 6: Final answer
    x = 264,305.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.