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Finding the Fourth Proportional to 328,301.63, 492,452.45 and 78,983.63

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Solution

The fourth proportional to 328,301.63, 492,452.45 and 78,983.63 is: 118,475.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,301.63 : 492,452.45 = 78,983.63 : x
  2. Step 2: Convert to fraction form
    328,301.63/492,452.45 = 78,983.63/x
  3. Step 3: Cross multiply
    328,301.63x = 492,452.45 × 78,983.63
  4. Step 4: Simplify right side
    328,301.63x = 38,895,679,246.21
  5. Step 5: Solve for x
    x = 38,895,679,246.21/328,301.63
  6. Step 6: Final answer
    x = 118,475.44

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Similar ratio
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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.