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Finding the Fourth Proportional to 222,590.30, 307,281 and 127,078.54

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Solution

The fourth proportional to 222,590.30, 307,281 and 127,078.54 is: 175,429.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,590.30 : 307,281 = 127,078.54 : x
  2. Step 2: Convert to fraction form
    222,590.30/307,281 = 127,078.54/x
  3. Step 3: Cross multiply
    222,590.30x = 307,281 × 127,078.54
  4. Step 4: Simplify right side
    222,590.30x = 39,048,820,849.74
  5. Step 5: Solve for x
    x = 39,048,820,849.74/222,590.30
  6. Step 6: Final answer
    x = 175,429.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.