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Finding the Fourth Proportional to 342,298.58, 472,214.88 and 221,479.25

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Solution

The fourth proportional to 342,298.58, 472,214.88 and 221,479.25 is: 305,539.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,298.58 : 472,214.88 = 221,479.25 : x
  2. Step 2: Convert to fraction form
    342,298.58/472,214.88 = 221,479.25/x
  3. Step 3: Cross multiply
    342,298.58x = 472,214.88 × 221,479.25
  4. Step 4: Simplify right side
    342,298.58x = 104,585,795,100.17
  5. Step 5: Solve for x
    x = 104,585,795,100.17/342,298.58
  6. Step 6: Final answer
    x = 305,539.67

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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.