Home / 380,814.57-525,520.85-208,742.09

Finding the Fourth Proportional to 380,814.57, 525,520.85 and 208,742.09

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Solution

The fourth proportional to 380,814.57, 525,520.85 and 208,742.09 is: 288,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,814.57 : 525,520.85 = 208,742.09 : x
  2. Step 2: Convert to fraction form
    380,814.57/525,520.85 = 208,742.09/x
  3. Step 3: Cross multiply
    380,814.57x = 525,520.85 × 208,742.09
  4. Step 4: Simplify right side
    380,814.57x = 109,698,316,896.26
  5. Step 5: Solve for x
    x = 109,698,316,896.26/380,814.57
  6. Step 6: Final answer
    x = 288,062.29

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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.