Home / 215,810.28-298,006.20-135,376.05

Finding the Fourth Proportional to 215,810.28, 298,006.20 and 135,376.05

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Solution

The fourth proportional to 215,810.28, 298,006.20 and 135,376.05 is: 186,936.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,810.28 : 298,006.20 = 135,376.05 : x
  2. Step 2: Convert to fraction form
    215,810.28/298,006.20 = 135,376.05/x
  3. Step 3: Cross multiply
    215,810.28x = 298,006.20 × 135,376.05
  4. Step 4: Simplify right side
    215,810.28x = 40,342,902,231.51
  5. Step 5: Solve for x
    x = 40,342,902,231.51/215,810.28
  6. Step 6: Final answer
    x = 186,936.89

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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.