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Finding the Fourth Proportional to 222,911.70, 307,618.09 and 127,420.45

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Solution

The fourth proportional to 222,911.70, 307,618.09 and 127,420.45 is: 175,840.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,911.70 : 307,618.09 = 127,420.45 : x
  2. Step 2: Convert to fraction form
    222,911.70/307,618.09 = 127,420.45/x
  3. Step 3: Cross multiply
    222,911.70x = 307,618.09 × 127,420.45
  4. Step 4: Simplify right side
    222,911.70x = 39,196,835,455.94
  5. Step 5: Solve for x
    x = 39,196,835,455.94/222,911.70
  6. Step 6: Final answer
    x = 175,840.19

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1.5x scale

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.