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Finding the Fourth Proportional to 339,291.20, 474,385.60 and 339,291.20

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Solution

The fourth proportional to 339,291.20, 474,385.60 and 339,291.20 is: 474,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,291.20 : 474,385.60 = 339,291.20 : x
  2. Step 2: Convert to fraction form
    339,291.20/474,385.60 = 339,291.20/x
  3. Step 3: Cross multiply
    339,291.20x = 474,385.60 × 339,291.20
  4. Step 4: Simplify right side
    339,291.20x = 160,954,859,486.72
  5. Step 5: Solve for x
    x = 160,954,859,486.72/339,291.20
  6. Step 6: Final answer
    x = 474,385.60

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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.