Home / 380,619.92-525,217.21-210,822.32

Finding the Fourth Proportional to 380,619.92, 525,217.21 and 210,822.32

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Solution

The fourth proportional to 380,619.92, 525,217.21 and 210,822.32 is: 290,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,619.92 : 525,217.21 = 210,822.32 : x
  2. Step 2: Convert to fraction form
    380,619.92/525,217.21 = 210,822.32/x
  3. Step 3: Cross multiply
    380,619.92x = 525,217.21 × 210,822.32
  4. Step 4: Simplify right side
    380,619.92x = 110,727,510,716.13
  5. Step 5: Solve for x
    x = 110,727,510,716.13/380,619.92
  6. Step 6: Final answer
    x = 290,913.60

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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.