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Finding the Fourth Proportional to 340,143.89, 510,195.18 and 126,870.69

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Solution

The fourth proportional to 340,143.89, 510,195.18 and 126,870.69 is: 190,298.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,143.89 : 510,195.18 = 126,870.69 : x
  2. Step 2: Convert to fraction form
    340,143.89/510,195.18 = 126,870.69/x
  3. Step 3: Cross multiply
    340,143.89x = 510,195.18 × 126,870.69
  4. Step 4: Simplify right side
    340,143.89x = 64,728,814,521.27
  5. Step 5: Solve for x
    x = 64,728,814,521.27/340,143.89
  6. Step 6: Final answer
    x = 190,298.33

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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.