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Finding the Fourth Proportional to 345,339.75, 518,038.97 and 96,021.75

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Solution

The fourth proportional to 345,339.75, 518,038.97 and 96,021.75 is: 144,040.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,339.75 : 518,038.97 = 96,021.75 : x
  2. Step 2: Convert to fraction form
    345,339.75/518,038.97 = 96,021.75/x
  3. Step 3: Cross multiply
    345,339.75x = 518,038.97 × 96,021.75
  4. Step 4: Simplify right side
    345,339.75x = 49,743,007,987.49
  5. Step 5: Solve for x
    x = 49,743,007,987.49/345,339.75
  6. Step 6: Final answer
    x = 144,040.78

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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.