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Finding the Fourth Proportional to 342,672.72, 472,888.98 and 189,721.50

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Solution

The fourth proportional to 342,672.72, 472,888.98 and 189,721.50 is: 261,816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,672.72 : 472,888.98 = 189,721.50 : x
  2. Step 2: Convert to fraction form
    342,672.72/472,888.98 = 189,721.50/x
  3. Step 3: Cross multiply
    342,672.72x = 472,888.98 × 189,721.50
  4. Step 4: Simplify right side
    342,672.72x = 89,717,206,619.07
  5. Step 5: Solve for x
    x = 89,717,206,619.07/342,672.72
  6. Step 6: Final answer
    x = 261,816.02

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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.