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Finding the Fourth Proportional to 222,776.88, 307,403.68 and 127,289.76

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Solution

The fourth proportional to 222,776.88, 307,403.68 and 127,289.76 is: 175,643.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,776.88 : 307,403.68 = 127,289.76 : x
  2. Step 2: Convert to fraction form
    222,776.88/307,403.68 = 127,289.76/x
  3. Step 3: Cross multiply
    222,776.88x = 307,403.68 × 127,289.76
  4. Step 4: Simplify right side
    222,776.88x = 39,129,340,650.32
  5. Step 5: Solve for x
    x = 39,129,340,650.32/222,776.88
  6. Step 6: Final answer
    x = 175,643.63

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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.