Home / 285,610.20-428,005.70-210,141.40

Finding the Fourth Proportional to 285,610.20, 428,005.70 and 210,141.40

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Solution

The fourth proportional to 285,610.20, 428,005.70 and 210,141.40 is: 314,910.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,610.20 : 428,005.70 = 210,141.40 : x
  2. Step 2: Convert to fraction form
    285,610.20/428,005.70 = 210,141.40/x
  3. Step 3: Cross multiply
    285,610.20x = 428,005.70 × 210,141.40
  4. Step 4: Simplify right side
    285,610.20x = 89,941,717,005.98
  5. Step 5: Solve for x
    x = 89,941,717,005.98/285,610.20
  6. Step 6: Final answer
    x = 314,910.73

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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.