Home / 285,614.95-428,336.07-85,882.32

Finding the Fourth Proportional to 285,614.95, 428,336.07 and 85,882.32

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Solution

The fourth proportional to 285,614.95, 428,336.07 and 85,882.32 is: 128,797.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,614.95 : 428,336.07 = 85,882.32 : x
  2. Step 2: Convert to fraction form
    285,614.95/428,336.07 = 85,882.32/x
  3. Step 3: Cross multiply
    285,614.95x = 428,336.07 × 85,882.32
  4. Step 4: Simplify right side
    285,614.95x = 36,786,492,860.19
  5. Step 5: Solve for x
    x = 36,786,492,860.19/285,614.95
  6. Step 6: Final answer
    x = 128,797.50

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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.