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Finding the Fourth Proportional to 380,469.61, 525,053.51 and 219,321.73

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Solution

The fourth proportional to 380,469.61, 525,053.51 and 219,321.73 is: 302,667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,469.61 : 525,053.51 = 219,321.73 : x
  2. Step 2: Convert to fraction form
    380,469.61/525,053.51 = 219,321.73/x
  3. Step 3: Cross multiply
    380,469.61x = 525,053.51 × 219,321.73
  4. Step 4: Simplify right side
    380,469.61x = 115,155,644,155.77
  5. Step 5: Solve for x
    x = 115,155,644,155.77/380,469.61
  6. Step 6: Final answer
    x = 302,667.13

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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.