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Finding the Fourth Proportional to 353,447.88, 487,754.29 and 210,204.78

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Solution

The fourth proportional to 353,447.88, 487,754.29 and 210,204.78 is: 290,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,447.88 : 487,754.29 = 210,204.78 : x
  2. Step 2: Convert to fraction form
    353,447.88/487,754.29 = 210,204.78/x
  3. Step 3: Cross multiply
    353,447.88x = 487,754.29 × 210,204.78
  4. Step 4: Simplify right side
    353,447.88x = 102,528,283,223.51
  5. Step 5: Solve for x
    x = 102,528,283,223.51/353,447.88
  6. Step 6: Final answer
    x = 290,080.35

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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.