Home / 211,991.28-317,294.64-155,816.52

Finding the Fourth Proportional to 211,991.28, 317,294.64 and 155,816.52

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Solution

The fourth proportional to 211,991.28, 317,294.64 and 155,816.52 is: 233,215.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,991.28 : 317,294.64 = 155,816.52 : x
  2. Step 2: Convert to fraction form
    211,991.28/317,294.64 = 155,816.52/x
  3. Step 3: Cross multiply
    211,991.28x = 317,294.64 × 155,816.52
  4. Step 4: Simplify right side
    211,991.28x = 49,439,746,619.45
  5. Step 5: Solve for x
    x = 49,439,746,619.45/211,991.28
  6. Step 6: Final answer
    x = 233,215.94

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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.