Home / 378,182.07-521,910.72-208,416.21

Finding the Fourth Proportional to 378,182.07, 521,910.72 and 208,416.21

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Solution

The fourth proportional to 378,182.07, 521,910.72 and 208,416.21 is: 287,625.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,182.07 : 521,910.72 = 208,416.21 : x
  2. Step 2: Convert to fraction form
    378,182.07/521,910.72 = 208,416.21/x
  3. Step 3: Cross multiply
    378,182.07x = 521,910.72 × 208,416.21
  4. Step 4: Simplify right side
    378,182.07x = 108,774,654,220.77
  5. Step 5: Solve for x
    x = 108,774,654,220.77/378,182.07
  6. Step 6: Final answer
    x = 287,625.10

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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.