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Finding the Fourth Proportional to 342,468.65, 472,739.20 and 306,596.31

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Solution

The fourth proportional to 342,468.65, 472,739.20 and 306,596.31 is: 423,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,468.65 : 472,739.20 = 306,596.31 : x
  2. Step 2: Convert to fraction form
    342,468.65/472,739.20 = 306,596.31/x
  3. Step 3: Cross multiply
    342,468.65x = 472,739.20 × 306,596.31
  4. Step 4: Simplify right side
    342,468.65x = 144,940,093,545.86
  5. Step 5: Solve for x
    x = 144,940,093,545.86/342,468.65
  6. Step 6: Final answer
    x = 423,221.50

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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.