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Finding the Fourth Proportional to 342,049.78, 472,029.33 and 191,146.78

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Solution

The fourth proportional to 342,049.78, 472,029.33 and 191,146.78 is: 263,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,049.78 : 472,029.33 = 191,146.78 : x
  2. Step 2: Convert to fraction form
    342,049.78/472,029.33 = 191,146.78/x
  3. Step 3: Cross multiply
    342,049.78x = 472,029.33 × 191,146.78
  4. Step 4: Simplify right side
    342,049.78x = 90,226,886,495.06
  5. Step 5: Solve for x
    x = 90,226,886,495.06/342,049.78
  6. Step 6: Final answer
    x = 263,782.91

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1.5x scale

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.