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Finding the Fourth Proportional to 342,009.20, 479,600.20 and 342,009.20

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Solution

The fourth proportional to 342,009.20, 479,600.20 and 342,009.20 is: 479,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,009.20 : 479,600.20 = 342,009.20 : x
  2. Step 2: Convert to fraction form
    342,009.20/479,600.20 = 342,009.20/x
  3. Step 3: Cross multiply
    342,009.20x = 479,600.20 × 342,009.20
  4. Step 4: Simplify right side
    342,009.20x = 164,027,680,721.84
  5. Step 5: Solve for x
    x = 164,027,680,721.84/342,009.20
  6. Step 6: Final answer
    x = 479,600.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.