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Finding the Fourth Proportional to 342,542.20, 480,346.40 and 342,542.20

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Solution

The fourth proportional to 342,542.20, 480,346.40 and 342,542.20 is: 480,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,542.20 : 480,346.40 = 342,542.20 : x
  2. Step 2: Convert to fraction form
    342,542.20/480,346.40 = 342,542.20/x
  3. Step 3: Cross multiply
    342,542.20x = 480,346.40 × 342,542.20
  4. Step 4: Simplify right side
    342,542.20x = 164,538,912,618.08
  5. Step 5: Solve for x
    x = 164,538,912,618.08/342,542.20
  6. Step 6: Final answer
    x = 480,346.40

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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.