Home / 215,835.64-298,041.23-135,401.43

Finding the Fourth Proportional to 215,835.64, 298,041.23 and 135,401.43

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Solution

The fourth proportional to 215,835.64, 298,041.23 and 135,401.43 is: 186,971.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,835.64 : 298,041.23 = 135,401.43 : x
  2. Step 2: Convert to fraction form
    215,835.64/298,041.23 = 135,401.43/x
  3. Step 3: Cross multiply
    215,835.64x = 298,041.23 × 135,401.43
  4. Step 4: Simplify right side
    215,835.64x = 40,355,208,740.96
  5. Step 5: Solve for x
    x = 40,355,208,740.96/215,835.64
  6. Step 6: Final answer
    x = 186,971.94

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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.