Home / 215,840.72-323,994.36-91,269.20

Finding the Fourth Proportional to 215,840.72, 323,994.36 and 91,269.20

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Solution

The fourth proportional to 215,840.72, 323,994.36 and 91,269.20 is: 137,002.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,840.72 : 323,994.36 = 91,269.20 : x
  2. Step 2: Convert to fraction form
    215,840.72/323,994.36 = 91,269.20/x
  3. Step 3: Cross multiply
    215,840.72x = 323,994.36 × 91,269.20
  4. Step 4: Simplify right side
    215,840.72x = 29,570,704,421.74
  5. Step 5: Solve for x
    x = 29,570,704,421.74/215,840.72
  6. Step 6: Final answer
    x = 137,002.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.