Home / 211,631.34-317,550.81-99,320.69

Finding the Fourth Proportional to 211,631.34, 317,550.81 and 99,320.69

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Solution

The fourth proportional to 211,631.34, 317,550.81 and 99,320.69 is: 149,029.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,631.34 : 317,550.81 = 99,320.69 : x
  2. Step 2: Convert to fraction form
    211,631.34/317,550.81 = 99,320.69/x
  3. Step 3: Cross multiply
    211,631.34x = 317,550.81 × 99,320.69
  4. Step 4: Simplify right side
    211,631.34x = 31,539,364,324.62
  5. Step 5: Solve for x
    x = 31,539,364,324.62/211,631.34
  6. Step 6: Final answer
    x = 149,029.74

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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.