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Finding the Fourth Proportional to 289,600.90, 434,401.35 and 219,616.90

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Solution

The fourth proportional to 289,600.90, 434,401.35 and 219,616.90 is: 329,425.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,600.90 : 434,401.35 = 219,616.90 : x
  2. Step 2: Convert to fraction form
    289,600.90/434,401.35 = 219,616.90/x
  3. Step 3: Cross multiply
    289,600.90x = 434,401.35 × 219,616.90
  4. Step 4: Simplify right side
    289,600.90x = 95,401,877,842.82
  5. Step 5: Solve for x
    x = 95,401,877,842.82/289,600.90
  6. Step 6: Final answer
    x = 329,425.35

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1.5x scale

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.