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Finding the Fourth Proportional to 323,700.64, 485,622.08 and 99,078.39

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Solution

The fourth proportional to 323,700.64, 485,622.08 and 99,078.39 is: 148,639.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,700.64 : 485,622.08 = 99,078.39 : x
  2. Step 2: Convert to fraction form
    323,700.64/485,622.08 = 99,078.39/x
  3. Step 3: Cross multiply
    323,700.64x = 485,622.08 × 99,078.39
  4. Step 4: Simplify right side
    323,700.64x = 48,114,653,711.00
  5. Step 5: Solve for x
    x = 48,114,653,711.00/323,700.64
  6. Step 6: Final answer
    x = 148,639.35

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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.