Home / 282,764.85-390,216.78-155,448.65

Finding the Fourth Proportional to 282,764.85, 390,216.78 and 155,448.65

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Solution

The fourth proportional to 282,764.85, 390,216.78 and 155,448.65 is: 214,519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,764.85 : 390,216.78 = 155,448.65 : x
  2. Step 2: Convert to fraction form
    282,764.85/390,216.78 = 155,448.65/x
  3. Step 3: Cross multiply
    282,764.85x = 390,216.78 × 155,448.65
  4. Step 4: Simplify right side
    282,764.85x = 60,658,669,707.26
  5. Step 5: Solve for x
    x = 60,658,669,707.26/282,764.85
  6. Step 6: Final answer
    x = 214,519.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.