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Finding the Fourth Proportional to 386,754.88, 579,592.80 and 208,878.88

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Solution

The fourth proportional to 386,754.88, 579,592.80 and 208,878.88 is: 313,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,754.88 : 579,592.80 = 208,878.88 : x
  2. Step 2: Convert to fraction form
    386,754.88/579,592.80 = 208,878.88/x
  3. Step 3: Cross multiply
    386,754.88x = 579,592.80 × 208,878.88
  4. Step 4: Simplify right side
    386,754.88x = 121,064,694,920.06
  5. Step 5: Solve for x
    x = 121,064,694,920.06/386,754.88
  6. Step 6: Final answer
    x = 313,026.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.