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Finding the Fourth Proportional to 280,937.95, 420,328.64 and 161,052.39

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Solution

The fourth proportional to 280,937.95, 420,328.64 and 161,052.39 is: 240,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,937.95 : 420,328.64 = 161,052.39 : x
  2. Step 2: Convert to fraction form
    280,937.95/420,328.64 = 161,052.39/x
  3. Step 3: Cross multiply
    280,937.95x = 420,328.64 × 161,052.39
  4. Step 4: Simplify right side
    280,937.95x = 67,694,932,460.08
  5. Step 5: Solve for x
    x = 67,694,932,460.08/280,937.95
  6. Step 6: Final answer
    x = 240,960.44

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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.