Home / 380,515.08-525,109.50-219,369.36

Finding the Fourth Proportional to 380,515.08, 525,109.50 and 219,369.36

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Solution

The fourth proportional to 380,515.08, 525,109.50 and 219,369.36 is: 302,728.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,515.08 : 525,109.50 = 219,369.36 : x
  2. Step 2: Convert to fraction form
    380,515.08/525,109.50 = 219,369.36/x
  3. Step 3: Cross multiply
    380,515.08x = 525,109.50 × 219,369.36
  4. Step 4: Simplify right side
    380,515.08x = 115,192,934,944.92
  5. Step 5: Solve for x
    x = 115,192,934,944.92/380,515.08
  6. Step 6: Final answer
    x = 302,728.96

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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.