Home / 257,529.42-386,286.84-70,540.92

Finding the Fourth Proportional to 257,529.42, 386,286.84 and 70,540.92

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Solution

The fourth proportional to 257,529.42, 386,286.84 and 70,540.92 is: 105,809.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,529.42 : 386,286.84 = 70,540.92 : x
  2. Step 2: Convert to fraction form
    257,529.42/386,286.84 = 70,540.92/x
  3. Step 3: Cross multiply
    257,529.42x = 386,286.84 × 70,540.92
  4. Step 4: Simplify right side
    257,529.42x = 27,249,029,077.49
  5. Step 5: Solve for x
    x = 27,249,029,077.49/257,529.42
  6. Step 6: Final answer
    x = 105,809.38

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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.