Home / 210,730.12-315,930.85-143,083.78

Finding the Fourth Proportional to 210,730.12, 315,930.85 and 143,083.78

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Solution

The fourth proportional to 210,730.12, 315,930.85 and 143,083.78 is: 214,514.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,730.12 : 315,930.85 = 143,083.78 : x
  2. Step 2: Convert to fraction form
    210,730.12/315,930.85 = 143,083.78/x
  3. Step 3: Cross multiply
    210,730.12x = 315,930.85 × 143,083.78
  4. Step 4: Simplify right side
    210,730.12x = 45,204,579,089.08
  5. Step 5: Solve for x
    x = 45,204,579,089.08/210,730.12
  6. Step 6: Final answer
    x = 214,514.09

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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.