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Finding the Fourth Proportional to 245,310.40, 338,524.32 and 136,410.40

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Solution

The fourth proportional to 245,310.40, 338,524.32 and 136,410.40 is: 188,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,310.40 : 338,524.32 = 136,410.40 : x
  2. Step 2: Convert to fraction form
    245,310.40/338,524.32 = 136,410.40/x
  3. Step 3: Cross multiply
    245,310.40x = 338,524.32 × 136,410.40
  4. Step 4: Simplify right side
    245,310.40x = 46,178,237,900.93
  5. Step 5: Solve for x
    x = 46,178,237,900.93/245,310.40
  6. Step 6: Final answer
    x = 188,244.11

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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.