Home / 211,889.36-317,833.90-78,803.12

Finding the Fourth Proportional to 211,889.36, 317,833.90 and 78,803.12

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Solution

The fourth proportional to 211,889.36, 317,833.90 and 78,803.12 is: 118,204.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,889.36 : 317,833.90 = 78,803.12 : x
  2. Step 2: Convert to fraction form
    211,889.36/317,833.90 = 78,803.12/x
  3. Step 3: Cross multiply
    211,889.36x = 317,833.90 × 78,803.12
  4. Step 4: Simplify right side
    211,889.36x = 25,046,302,961.77
  5. Step 5: Solve for x
    x = 25,046,302,961.77/211,889.36
  6. Step 6: Final answer
    x = 118,204.63

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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.