Home / 205,024.90-307,288-145,070.65

Finding the Fourth Proportional to 205,024.90, 307,288 and 145,070.65

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Solution

The fourth proportional to 205,024.90, 307,288 and 145,070.65 is: 217,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,024.90 : 307,288 = 145,070.65 : x
  2. Step 2: Convert to fraction form
    205,024.90/307,288 = 145,070.65/x
  3. Step 3: Cross multiply
    205,024.90x = 307,288 × 145,070.65
  4. Step 4: Simplify right side
    205,024.90x = 44,578,469,897.20
  5. Step 5: Solve for x
    x = 44,578,469,897.20/205,024.90
  6. Step 6: Final answer
    x = 217,429.54

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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.