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Finding the Fourth Proportional to 380,879.48, 525,595.56 and 219,786.32

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Solution

The fourth proportional to 380,879.48, 525,595.56 and 219,786.32 is: 303,294.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,879.48 : 525,595.56 = 219,786.32 : x
  2. Step 2: Convert to fraction form
    380,879.48/525,595.56 = 219,786.32/x
  3. Step 3: Cross multiply
    380,879.48x = 525,595.56 × 219,786.32
  4. Step 4: Simplify right side
    380,879.48x = 115,518,713,940.74
  5. Step 5: Solve for x
    x = 115,518,713,940.74/380,879.48
  6. Step 6: Final answer
    x = 303,294.66

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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.