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Finding the Fourth Proportional to 330,243.15, 495,208.58 and 127,934.01

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Solution

The fourth proportional to 330,243.15, 495,208.58 and 127,934.01 is: 191,840.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,243.15 : 495,208.58 = 127,934.01 : x
  2. Step 2: Convert to fraction form
    330,243.15/495,208.58 = 127,934.01/x
  3. Step 3: Cross multiply
    330,243.15x = 495,208.58 × 127,934.01
  4. Step 4: Simplify right side
    330,243.15x = 63,354,018,786.14
  5. Step 5: Solve for x
    x = 63,354,018,786.14/330,243.15
  6. Step 6: Final answer
    x = 191,840.52

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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.