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Finding the Fourth Proportional to 440,059.45, 660,514.88 and 212,514.56

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Solution

The fourth proportional to 440,059.45, 660,514.88 and 212,514.56 is: 318,977.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,059.45 : 660,514.88 = 212,514.56 : x
  2. Step 2: Convert to fraction form
    440,059.45/660,514.88 = 212,514.56/x
  3. Step 3: Cross multiply
    440,059.45x = 660,514.88 × 212,514.56
  4. Step 4: Simplify right side
    440,059.45x = 140,369,024,731.51
  5. Step 5: Solve for x
    x = 140,369,024,731.51/440,059.45
  6. Step 6: Final answer
    x = 318,977.41

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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.