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Finding the Fourth Proportional to 222,979.72, 307,712.12 and 127,488.28

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Solution

The fourth proportional to 222,979.72, 307,712.12 and 127,488.28 is: 175,933.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,979.72 : 307,712.12 = 127,488.28 : x
  2. Step 2: Convert to fraction form
    222,979.72/307,712.12 = 127,488.28/x
  3. Step 3: Cross multiply
    222,979.72x = 307,712.12 × 127,488.28
  4. Step 4: Simplify right side
    222,979.72x = 39,229,688,913.95
  5. Step 5: Solve for x
    x = 39,229,688,913.95/222,979.72
  6. Step 6: Final answer
    x = 175,933.89

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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.