Home / 380,550.28-525,152.82-210,780.76

Finding the Fourth Proportional to 380,550.28, 525,152.82 and 210,780.76

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Solution

The fourth proportional to 380,550.28, 525,152.82 and 210,780.76 is: 290,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,550.28 : 525,152.82 = 210,780.76 : x
  2. Step 2: Convert to fraction form
    380,550.28/525,152.82 = 210,780.76/x
  3. Step 3: Cross multiply
    380,550.28x = 525,152.82 × 210,780.76
  4. Step 4: Simplify right side
    380,550.28x = 110,692,110,515.74
  5. Step 5: Solve for x
    x = 110,692,110,515.74/380,550.28
  6. Step 6: Final answer
    x = 290,873.81

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1.5x scale

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.