Home / 211,320.70-317,309.10-122,747.20

Finding the Fourth Proportional to 211,320.70, 317,309.10 and 122,747.20

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Solution

The fourth proportional to 211,320.70, 317,309.10 and 122,747.20 is: 184,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,320.70 : 317,309.10 = 122,747.20 : x
  2. Step 2: Convert to fraction form
    211,320.70/317,309.10 = 122,747.20/x
  3. Step 3: Cross multiply
    211,320.70x = 317,309.10 × 122,747.20
  4. Step 4: Simplify right side
    211,320.70x = 38,948,803,559.52
  5. Step 5: Solve for x
    x = 38,948,803,559.52/211,320.70
  6. Step 6: Final answer
    x = 184,311.35

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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.