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Finding the Fourth Proportional to 245,249.70, 338,423.67 and 137,811.30

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Solution

The fourth proportional to 245,249.70, 338,423.67 and 137,811.30 is: 190,167.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,249.70 : 338,423.67 = 137,811.30 : x
  2. Step 2: Convert to fraction form
    245,249.70/338,423.67 = 137,811.30/x
  3. Step 3: Cross multiply
    245,249.70x = 338,423.67 × 137,811.30
  4. Step 4: Simplify right side
    245,249.70x = 46,638,605,913.47
  5. Step 5: Solve for x
    x = 46,638,605,913.47/245,249.70
  6. Step 6: Final answer
    x = 190,167.84

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1.5x scale

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.