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Finding the Fourth Proportional to 316,293.33, 436,471.95 and 189,039.09

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Solution

The fourth proportional to 316,293.33, 436,471.95 and 189,039.09 is: 260,866.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,293.33 : 436,471.95 = 189,039.09 : x
  2. Step 2: Convert to fraction form
    316,293.33/436,471.95 = 189,039.09/x
  3. Step 3: Cross multiply
    316,293.33x = 436,471.95 × 189,039.09
  4. Step 4: Simplify right side
    316,293.33x = 82,510,260,238.53
  5. Step 5: Solve for x
    x = 82,510,260,238.53/316,293.33
  6. Step 6: Final answer
    x = 260,866.27

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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.