Home / 210,221.21-315,144.34-77,070.44

Finding the Fourth Proportional to 210,221.21, 315,144.34 and 77,070.44

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Solution

The fourth proportional to 210,221.21, 315,144.34 and 77,070.44 is: 115,536.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,221.21 : 315,144.34 = 77,070.44 : x
  2. Step 2: Convert to fraction form
    210,221.21/315,144.34 = 77,070.44/x
  3. Step 3: Cross multiply
    210,221.21x = 315,144.34 × 77,070.44
  4. Step 4: Simplify right side
    210,221.21x = 24,288,313,542.49
  5. Step 5: Solve for x
    x = 24,288,313,542.49/210,221.21
  6. Step 6: Final answer
    x = 115,536.93

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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.