Home / 211,345.15-317,299.20-122,662.30

Finding the Fourth Proportional to 211,345.15, 317,299.20 and 122,662.30

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Solution

The fourth proportional to 211,345.15, 317,299.20 and 122,662.30 is: 184,156.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,345.15 : 317,299.20 = 122,662.30 : x
  2. Step 2: Convert to fraction form
    211,345.15/317,299.20 = 122,662.30/x
  3. Step 3: Cross multiply
    211,345.15x = 317,299.20 × 122,662.30
  4. Step 4: Simplify right side
    211,345.15x = 38,920,649,660.16
  5. Step 5: Solve for x
    x = 38,920,649,660.16/211,345.15
  6. Step 6: Final answer
    x = 184,156.81

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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.