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Finding the Fourth Proportional to 279,558.63, 385,807.11 and 210,524.50

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Solution

The fourth proportional to 279,558.63, 385,807.11 and 210,524.50 is: 290,536.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,558.63 : 385,807.11 = 210,524.50 : x
  2. Step 2: Convert to fraction form
    279,558.63/385,807.11 = 210,524.50/x
  3. Step 3: Cross multiply
    279,558.63x = 385,807.11 × 210,524.50
  4. Step 4: Simplify right side
    279,558.63x = 81,221,848,621.99
  5. Step 5: Solve for x
    x = 81,221,848,621.99/279,558.63
  6. Step 6: Final answer
    x = 290,536.01

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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.