Home / 211,929.60-317,894.40-133,099.20

Finding the Fourth Proportional to 211,929.60, 317,894.40 and 133,099.20

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Solution

The fourth proportional to 211,929.60, 317,894.40 and 133,099.20 is: 199,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,929.60 : 317,894.40 = 133,099.20 : x
  2. Step 2: Convert to fraction form
    211,929.60/317,894.40 = 133,099.20/x
  3. Step 3: Cross multiply
    211,929.60x = 317,894.40 × 133,099.20
  4. Step 4: Simplify right side
    211,929.60x = 42,311,490,324.48
  5. Step 5: Solve for x
    x = 42,311,490,324.48/211,929.60
  6. Step 6: Final answer
    x = 199,648.80

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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.