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Finding the Fourth Proportional to 357,360.36, 493,388.08 and 221,539.46

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Solution

The fourth proportional to 357,360.36, 493,388.08 and 221,539.46 is: 305,867.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,360.36 : 493,388.08 = 221,539.46 : x
  2. Step 2: Convert to fraction form
    357,360.36/493,388.08 = 221,539.46/x
  3. Step 3: Cross multiply
    357,360.36x = 493,388.08 × 221,539.46
  4. Step 4: Simplify right side
    357,360.36x = 109,304,928,813.64
  5. Step 5: Solve for x
    x = 109,304,928,813.64/357,360.36
  6. Step 6: Final answer
    x = 305,867.52

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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.