Home / 380,619.54-525,216.69-210,821.94

Finding the Fourth Proportional to 380,619.54, 525,216.69 and 210,821.94

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Solution

The fourth proportional to 380,619.54, 525,216.69 and 210,821.94 is: 290,913.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,619.54 : 525,216.69 = 210,821.94 : x
  2. Step 2: Convert to fraction form
    380,619.54/525,216.69 = 210,821.94/x
  3. Step 3: Cross multiply
    380,619.54x = 525,216.69 × 210,821.94
  4. Step 4: Simplify right side
    380,619.54x = 110,727,201,506.18
  5. Step 5: Solve for x
    x = 110,727,201,506.18/380,619.54
  6. Step 6: Final answer
    x = 290,913.08

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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.