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Finding the Fourth Proportional to 345,469.66, 518,099.86 and 120,788.22

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Solution

The fourth proportional to 345,469.66, 518,099.86 and 120,788.22 is: 181,145.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,469.66 : 518,099.86 = 120,788.22 : x
  2. Step 2: Convert to fraction form
    345,469.66/518,099.86 = 120,788.22/x
  3. Step 3: Cross multiply
    345,469.66x = 518,099.86 × 120,788.22
  4. Step 4: Simplify right side
    345,469.66x = 62,580,359,871.65
  5. Step 5: Solve for x
    x = 62,580,359,871.65/345,469.66
  6. Step 6: Final answer
    x = 181,145.75

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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.