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Finding the Fourth Proportional to 342,652.86, 472,793.94 and 215,254.65

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Solution

The fourth proportional to 342,652.86, 472,793.94 and 215,254.65 is: 297,009.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,652.86 : 472,793.94 = 215,254.65 : x
  2. Step 2: Convert to fraction form
    342,652.86/472,793.94 = 215,254.65/x
  3. Step 3: Cross multiply
    342,652.86x = 472,793.94 × 215,254.65
  4. Step 4: Simplify right side
    342,652.86x = 101,771,094,076.82
  5. Step 5: Solve for x
    x = 101,771,094,076.82/342,652.86
  6. Step 6: Final answer
    x = 297,009.32

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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.