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Finding the Fourth Proportional to 347,383.20, 520,297.20 and 207,415.20

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Solution

The fourth proportional to 347,383.20, 520,297.20 and 207,415.20 is: 310,658.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,383.20 : 520,297.20 = 207,415.20 : x
  2. Step 2: Convert to fraction form
    347,383.20/520,297.20 = 207,415.20/x
  3. Step 3: Cross multiply
    347,383.20x = 520,297.20 × 207,415.20
  4. Step 4: Simplify right side
    347,383.20x = 107,917,547,797.44
  5. Step 5: Solve for x
    x = 107,917,547,797.44/347,383.20
  6. Step 6: Final answer
    x = 310,658.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.