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Finding the Fourth Proportional to 342,818.82, 472,932.96 and 221,999.03

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Solution

The fourth proportional to 342,818.82, 472,932.96 and 221,999.03 is: 306,256.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,818.82 : 472,932.96 = 221,999.03 : x
  2. Step 2: Convert to fraction form
    342,818.82/472,932.96 = 221,999.03/x
  3. Step 3: Cross multiply
    342,818.82x = 472,932.96 × 221,999.03
  4. Step 4: Simplify right side
    342,818.82x = 104,990,656,010.36
  5. Step 5: Solve for x
    x = 104,990,656,010.36/342,818.82
  6. Step 6: Final answer
    x = 306,256.98

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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.