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Finding the Fourth Proportional to 347,561.20, 485,404.70 and 347,561.20

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Solution

The fourth proportional to 347,561.20, 485,404.70 and 347,561.20 is: 485,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,561.20 : 485,404.70 = 347,561.20 : x
  2. Step 2: Convert to fraction form
    347,561.20/485,404.70 = 347,561.20/x
  3. Step 3: Cross multiply
    347,561.20x = 485,404.70 × 347,561.20
  4. Step 4: Simplify right side
    347,561.20x = 168,707,840,017.64
  5. Step 5: Solve for x
    x = 168,707,840,017.64/347,561.20
  6. Step 6: Final answer
    x = 485,404.70

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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.