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Finding the Fourth Proportional to 245,896.64, 339,328.24 and 136,998.40

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Solution

The fourth proportional to 245,896.64, 339,328.24 and 136,998.40 is: 189,052.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,896.64 : 339,328.24 = 136,998.40 : x
  2. Step 2: Convert to fraction form
    245,896.64/339,328.24 = 136,998.40/x
  3. Step 3: Cross multiply
    245,896.64x = 339,328.24 × 136,998.40
  4. Step 4: Simplify right side
    245,896.64x = 46,487,425,954.82
  5. Step 5: Solve for x
    x = 46,487,425,954.82/245,896.64
  6. Step 6: Final answer
    x = 189,052.71

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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.