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Finding the Fourth Proportional to 342,656.86, 472,799.46 and 215,258.65

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Solution

The fourth proportional to 342,656.86, 472,799.46 and 215,258.65 is: 297,014.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,656.86 : 472,799.46 = 215,258.65 : x
  2. Step 2: Convert to fraction form
    342,656.86/472,799.46 = 215,258.65/x
  3. Step 3: Cross multiply
    342,656.86x = 472,799.46 × 215,258.65
  4. Step 4: Simplify right side
    342,656.86x = 101,774,173,480.33
  5. Step 5: Solve for x
    x = 101,774,173,480.33/342,656.86
  6. Step 6: Final answer
    x = 297,014.84

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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.