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Finding the Fourth Proportional to 210,793.16, 290,890.76 and 115,299.02

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Solution

The fourth proportional to 210,793.16, 290,890.76 and 115,299.02 is: 159,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,793.16 : 290,890.76 = 115,299.02 : x
  2. Step 2: Convert to fraction form
    210,793.16/290,890.76 = 115,299.02/x
  3. Step 3: Cross multiply
    210,793.16x = 290,890.76 × 115,299.02
  4. Step 4: Simplify right side
    210,793.16x = 33,539,419,555.06
  5. Step 5: Solve for x
    x = 33,539,419,555.06/210,793.16
  6. Step 6: Final answer
    x = 159,110.57

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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.