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Finding the Fourth Proportional to 210,920.98, 291,206.80 and 188,220.94

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Solution

The fourth proportional to 210,920.98, 291,206.80 and 188,220.94 is: 259,866.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,920.98 : 291,206.80 = 188,220.94 : x
  2. Step 2: Convert to fraction form
    210,920.98/291,206.80 = 188,220.94/x
  3. Step 3: Cross multiply
    210,920.98x = 291,206.80 × 188,220.94
  4. Step 4: Simplify right side
    210,920.98x = 54,811,216,174.36
  5. Step 5: Solve for x
    x = 54,811,216,174.36/210,920.98
  6. Step 6: Final answer
    x = 259,866.12

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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.