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Finding the Fourth Proportional to 342,721.63, 472,955.79 and 191,818.63

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Solution

The fourth proportional to 342,721.63, 472,955.79 and 191,818.63 is: 264,709.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,721.63 : 472,955.79 = 191,818.63 : x
  2. Step 2: Convert to fraction form
    342,721.63/472,955.79 = 191,818.63/x
  3. Step 3: Cross multiply
    342,721.63x = 472,955.79 × 191,818.63
  4. Step 4: Simplify right side
    342,721.63x = 90,721,731,688.37
  5. Step 5: Solve for x
    x = 90,721,731,688.37/342,721.63
  6. Step 6: Final answer
    x = 264,709.68

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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.