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Finding the Fourth Proportional to 427,808.58, 590,380.21 and 236,817.87

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Solution

The fourth proportional to 427,808.58, 590,380.21 and 236,817.87 is: 326,811.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,808.58 : 590,380.21 = 236,817.87 : x
  2. Step 2: Convert to fraction form
    427,808.58/590,380.21 = 236,817.87/x
  3. Step 3: Cross multiply
    427,808.58x = 590,380.21 × 236,817.87
  4. Step 4: Simplify right side
    427,808.58x = 139,812,583,822.35
  5. Step 5: Solve for x
    x = 139,812,583,822.35/427,808.58
  6. Step 6: Final answer
    x = 326,811.08

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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.