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Finding the Fourth Proportional to 279,559.63, 385,808.49 and 210,525.50

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Solution

The fourth proportional to 279,559.63, 385,808.49 and 210,525.50 is: 290,537.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,559.63 : 385,808.49 = 210,525.50 : x
  2. Step 2: Convert to fraction form
    279,559.63/385,808.49 = 210,525.50/x
  3. Step 3: Cross multiply
    279,559.63x = 385,808.49 × 210,525.50
  4. Step 4: Simplify right side
    279,559.63x = 81,222,525,261.50
  5. Step 5: Solve for x
    x = 81,222,525,261.50/279,559.63
  6. Step 6: Final answer
    x = 290,537.39

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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.