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Finding the Fourth Proportional to 522,169.86, 720,540.21 and 307,297.11

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Solution

The fourth proportional to 522,169.86, 720,540.21 and 307,297.11 is: 424,038.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,169.86 : 720,540.21 = 307,297.11 : x
  2. Step 2: Convert to fraction form
    522,169.86/720,540.21 = 307,297.11/x
  3. Step 3: Cross multiply
    522,169.86x = 720,540.21 × 307,297.11
  4. Step 4: Simplify right side
    522,169.86x = 221,419,924,171.79
  5. Step 5: Solve for x
    x = 221,419,924,171.79/522,169.86
  6. Step 6: Final answer
    x = 424,038.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.