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Finding the Fourth Proportional to 210,846.60, 316,342.80 and 203,556.60

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Solution

The fourth proportional to 210,846.60, 316,342.80 and 203,556.60 is: 305,405.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,846.60 : 316,342.80 = 203,556.60 : x
  2. Step 2: Convert to fraction form
    210,846.60/316,342.80 = 203,556.60/x
  3. Step 3: Cross multiply
    210,846.60x = 316,342.80 × 203,556.60
  4. Step 4: Simplify right side
    210,846.60x = 64,393,664,802.48
  5. Step 5: Solve for x
    x = 64,393,664,802.48/210,846.60
  6. Step 6: Final answer
    x = 305,405.28

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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.