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Finding the Fourth Proportional to 323,468.70, 485,203.05 and 289,254.30

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Solution

The fourth proportional to 323,468.70, 485,203.05 and 289,254.30 is: 433,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,468.70 : 485,203.05 = 289,254.30 : x
  2. Step 2: Convert to fraction form
    323,468.70/485,203.05 = 289,254.30/x
  3. Step 3: Cross multiply
    323,468.70x = 485,203.05 × 289,254.30
  4. Step 4: Simplify right side
    323,468.70x = 140,347,068,585.62
  5. Step 5: Solve for x
    x = 140,347,068,585.62/323,468.70
  6. Step 6: Final answer
    x = 433,881.45

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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.