Home / 210,226.68-315,421.43-77,198.76

Finding the Fourth Proportional to 210,226.68, 315,421.43 and 77,198.76

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Solution

The fourth proportional to 210,226.68, 315,421.43 and 77,198.76 is: 115,828.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,226.68 : 315,421.43 = 77,198.76 : x
  2. Step 2: Convert to fraction form
    210,226.68/315,421.43 = 77,198.76/x
  3. Step 3: Cross multiply
    210,226.68x = 315,421.43 × 77,198.76
  4. Step 4: Simplify right side
    210,226.68x = 24,350,142,887.43
  5. Step 5: Solve for x
    x = 24,350,142,887.43/210,226.68
  6. Step 6: Final answer
    x = 115,828.03

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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.