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Finding the Fourth Proportional to 240,639.10, 360,958.65 and 219,643.90

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Solution

The fourth proportional to 240,639.10, 360,958.65 and 219,643.90 is: 329,465.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,639.10 : 360,958.65 = 219,643.90 : x
  2. Step 2: Convert to fraction form
    240,639.10/360,958.65 = 219,643.90/x
  3. Step 3: Cross multiply
    240,639.10x = 360,958.65 × 219,643.90
  4. Step 4: Simplify right side
    240,639.10x = 79,282,365,624.74
  5. Step 5: Solve for x
    x = 79,282,365,624.74/240,639.10
  6. Step 6: Final answer
    x = 329,465.85

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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.