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Finding the Fourth Proportional to 245,205.70, 338,410.65 and 149,712.10

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Solution

The fourth proportional to 245,205.70, 338,410.65 and 149,712.10 is: 206,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,205.70 : 338,410.65 = 149,712.10 : x
  2. Step 2: Convert to fraction form
    245,205.70/338,410.65 = 149,712.10/x
  3. Step 3: Cross multiply
    245,205.70x = 338,410.65 × 149,712.10
  4. Step 4: Simplify right side
    245,205.70x = 50,664,169,073.87
  5. Step 5: Solve for x
    x = 50,664,169,073.87/245,205.70
  6. Step 6: Final answer
    x = 206,619.05

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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.