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Finding the Fourth Proportional to 259,434.90, 388,448.87 and 134,513.46

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Solution

The fourth proportional to 259,434.90, 388,448.87 and 134,513.46 is: 201,405.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,434.90 : 388,448.87 = 134,513.46 : x
  2. Step 2: Convert to fraction form
    259,434.90/388,448.87 = 134,513.46/x
  3. Step 3: Cross multiply
    259,434.90x = 388,448.87 × 134,513.46
  4. Step 4: Simplify right side
    259,434.90x = 52,251,600,864.22
  5. Step 5: Solve for x
    x = 52,251,600,864.22/259,434.90
  6. Step 6: Final answer
    x = 201,405.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.