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Finding the Fourth Proportional to 342,351.88, 472,459.51 and 189,387.43

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Solution

The fourth proportional to 342,351.88, 472,459.51 and 189,387.43 is: 261,362.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,351.88 : 472,459.51 = 189,387.43 : x
  2. Step 2: Convert to fraction form
    342,351.88/472,459.51 = 189,387.43/x
  3. Step 3: Cross multiply
    342,351.88x = 472,459.51 × 189,387.43
  4. Step 4: Simplify right side
    342,351.88x = 89,477,893,025.83
  5. Step 5: Solve for x
    x = 89,477,893,025.83/342,351.88
  6. Step 6: Final answer
    x = 261,362.35

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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.