Home / 330,781.23-496,038.27-128,270.70

Finding the Fourth Proportional to 330,781.23, 496,038.27 and 128,270.70

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Solution

The fourth proportional to 330,781.23, 496,038.27 and 128,270.70 is: 192,354.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,781.23 : 496,038.27 = 128,270.70 : x
  2. Step 2: Convert to fraction form
    330,781.23/496,038.27 = 128,270.70/x
  3. Step 3: Cross multiply
    330,781.23x = 496,038.27 × 128,270.70
  4. Step 4: Simplify right side
    330,781.23x = 63,627,177,208.07
  5. Step 5: Solve for x
    x = 63,627,177,208.07/330,781.23
  6. Step 6: Final answer
    x = 192,354.26

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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.