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Finding the Fourth Proportional to 250,503.40, 345,697.50 and 143,087.68

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Solution

The fourth proportional to 250,503.40, 345,697.50 and 143,087.68 is: 197,462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,503.40 : 345,697.50 = 143,087.68 : x
  2. Step 2: Convert to fraction form
    250,503.40/345,697.50 = 143,087.68/x
  3. Step 3: Cross multiply
    250,503.40x = 345,697.50 × 143,087.68
  4. Step 4: Simplify right side
    250,503.40x = 49,465,053,256.80
  5. Step 5: Solve for x
    x = 49,465,053,256.80/250,503.40
  6. Step 6: Final answer
    x = 197,462.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.