Home / 210,921.98-291,208.18-188,221.94

Finding the Fourth Proportional to 210,921.98, 291,208.18 and 188,221.94

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Solution

The fourth proportional to 210,921.98, 291,208.18 and 188,221.94 is: 259,867.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,921.98 : 291,208.18 = 188,221.94 : x
  2. Step 2: Convert to fraction form
    210,921.98/291,208.18 = 188,221.94/x
  3. Step 3: Cross multiply
    210,921.98x = 291,208.18 × 188,221.94
  4. Step 4: Simplify right side
    210,921.98x = 54,811,767,127.43
  5. Step 5: Solve for x
    x = 54,811,767,127.43/210,921.98
  6. Step 6: Final answer
    x = 259,867.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.