Home / 380,555.45-525,183.83-210,789.57

Finding the Fourth Proportional to 380,555.45, 525,183.83 and 210,789.57

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Solution

The fourth proportional to 380,555.45, 525,183.83 and 210,789.57 is: 290,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,555.45 : 525,183.83 = 210,789.57 : x
  2. Step 2: Convert to fraction form
    380,555.45/525,183.83 = 210,789.57/x
  3. Step 3: Cross multiply
    380,555.45x = 525,183.83 × 210,789.57
  4. Step 4: Simplify right side
    380,555.45x = 110,703,272,642.71
  5. Step 5: Solve for x
    x = 110,703,272,642.71/380,555.45
  6. Step 6: Final answer
    x = 290,899.20

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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.