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Finding the Fourth Proportional to 203,023.71, 304,364.28 and 127,978.40

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Solution

The fourth proportional to 203,023.71, 304,364.28 and 127,978.40 is: 191,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,023.71 : 304,364.28 = 127,978.40 : x
  2. Step 2: Convert to fraction form
    203,023.71/304,364.28 = 127,978.40/x
  3. Step 3: Cross multiply
    203,023.71x = 304,364.28 × 127,978.40
  4. Step 4: Simplify right side
    203,023.71x = 38,952,053,571.55
  5. Step 5: Solve for x
    x = 38,952,053,571.55/203,023.71
  6. Step 6: Final answer
    x = 191,859.63

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1.5x scale

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.