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Finding the Fourth Proportional to 210,479.88, 290,463.26 and 114,988.17

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Solution

The fourth proportional to 210,479.88, 290,463.26 and 114,988.17 is: 158,684.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,479.88 : 290,463.26 = 114,988.17 : x
  2. Step 2: Convert to fraction form
    210,479.88/290,463.26 = 114,988.17/x
  3. Step 3: Cross multiply
    210,479.88x = 290,463.26 × 114,988.17
  4. Step 4: Simplify right side
    210,479.88x = 33,399,838,719.63
  5. Step 5: Solve for x
    x = 33,399,838,719.63/210,479.88
  6. Step 6: Final answer
    x = 158,684.23

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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.