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Finding the Fourth Proportional to 320,020.96, 480,031.44 and 98,404.96

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Solution

The fourth proportional to 320,020.96, 480,031.44 and 98,404.96 is: 147,607.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,020.96 : 480,031.44 = 98,404.96 : x
  2. Step 2: Convert to fraction form
    320,020.96/480,031.44 = 98,404.96/x
  3. Step 3: Cross multiply
    320,020.96x = 480,031.44 × 98,404.96
  4. Step 4: Simplify right side
    320,020.96x = 47,237,474,651.94
  5. Step 5: Solve for x
    x = 47,237,474,651.94/320,020.96
  6. Step 6: Final answer
    x = 147,607.44

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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.