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Finding the Fourth Proportional to 328,519.16, 492,774.42 and 79,199.16

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Solution

The fourth proportional to 328,519.16, 492,774.42 and 79,199.16 is: 118,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,519.16 : 492,774.42 = 79,199.16 : x
  2. Step 2: Convert to fraction form
    328,519.16/492,774.42 = 79,199.16/x
  3. Step 3: Cross multiply
    328,519.16x = 492,774.42 × 79,199.16
  4. Step 4: Simplify right side
    328,519.16x = 39,027,320,133.49
  5. Step 5: Solve for x
    x = 39,027,320,133.49/328,519.16
  6. Step 6: Final answer
    x = 118,797.70

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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.