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Finding the Fourth Proportional to 210,674.99, 290,731.52 and 115,181.71

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Solution

The fourth proportional to 210,674.99, 290,731.52 and 115,181.71 is: 158,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,674.99 : 290,731.52 = 115,181.71 : x
  2. Step 2: Convert to fraction form
    210,674.99/290,731.52 = 115,181.71/x
  3. Step 3: Cross multiply
    210,674.99x = 290,731.52 × 115,181.71
  4. Step 4: Simplify right side
    210,674.99x = 33,486,953,624.50
  5. Step 5: Solve for x
    x = 33,486,953,624.50/210,674.99
  6. Step 6: Final answer
    x = 158,950.78

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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.