Home / 380,821.86-525,539.94-208,738.50

Finding the Fourth Proportional to 380,821.86, 525,539.94 and 208,738.50

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Solution

The fourth proportional to 380,821.86, 525,539.94 and 208,738.50 is: 288,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,821.86 : 525,539.94 = 208,738.50 : x
  2. Step 2: Convert to fraction form
    380,821.86/525,539.94 = 208,738.50/x
  3. Step 3: Cross multiply
    380,821.86x = 525,539.94 × 208,738.50
  4. Step 4: Simplify right side
    380,821.86x = 109,700,418,765.69
  5. Step 5: Solve for x
    x = 109,700,418,765.69/380,821.86
  6. Step 6: Final answer
    x = 288,062.29

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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.