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Finding the Fourth Proportional to 323,311.60, 485,053.80 and 288,492.40

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Solution

The fourth proportional to 323,311.60, 485,053.80 and 288,492.40 is: 432,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,311.60 : 485,053.80 = 288,492.40 : x
  2. Step 2: Convert to fraction form
    323,311.60/485,053.80 = 288,492.40/x
  3. Step 3: Cross multiply
    323,311.60x = 485,053.80 × 288,492.40
  4. Step 4: Simplify right side
    323,311.60x = 139,934,334,891.12
  5. Step 5: Solve for x
    x = 139,934,334,891.12/323,311.60
  6. Step 6: Final answer
    x = 432,815.70

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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.