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Finding the Fourth Proportional to 245,311.80, 367,979.85 and 127,213.80

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Solution

The fourth proportional to 245,311.80, 367,979.85 and 127,213.80 is: 190,827.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,311.80 : 367,979.85 = 127,213.80 : x
  2. Step 2: Convert to fraction form
    245,311.80/367,979.85 = 127,213.80/x
  3. Step 3: Cross multiply
    245,311.80x = 367,979.85 × 127,213.80
  4. Step 4: Simplify right side
    245,311.80x = 46,812,115,041.93
  5. Step 5: Solve for x
    x = 46,812,115,041.93/245,311.80
  6. Step 6: Final answer
    x = 190,827.00

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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.