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Finding the Fourth Proportional to 259,412.34, 389,089.34 and 69,886.71

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Solution

The fourth proportional to 259,412.34, 389,089.34 and 69,886.71 is: 104,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,412.34 : 389,089.34 = 69,886.71 : x
  2. Step 2: Convert to fraction form
    259,412.34/389,089.34 = 69,886.71/x
  3. Step 3: Cross multiply
    259,412.34x = 389,089.34 × 69,886.71
  4. Step 4: Simplify right side
    259,412.34x = 27,192,173,519.24
  5. Step 5: Solve for x
    x = 27,192,173,519.24/259,412.34
  6. Step 6: Final answer
    x = 104,822.21

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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.