Home / 215,811.28-298,007.58-135,377.05

Finding the Fourth Proportional to 215,811.28, 298,007.58 and 135,377.05

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Solution

The fourth proportional to 215,811.28, 298,007.58 and 135,377.05 is: 186,938.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,811.28 : 298,007.58 = 135,377.05 : x
  2. Step 2: Convert to fraction form
    215,811.28/298,007.58 = 135,377.05/x
  3. Step 3: Cross multiply
    215,811.28x = 298,007.58 × 135,377.05
  4. Step 4: Simplify right side
    215,811.28x = 40,343,387,058.04
  5. Step 5: Solve for x
    x = 40,343,387,058.04/215,811.28
  6. Step 6: Final answer
    x = 186,938.27

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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.