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Finding the Fourth Proportional to 328,724.98, 493,087.47 and 79,406.98

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Solution

The fourth proportional to 328,724.98, 493,087.47 and 79,406.98 is: 119,110.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,724.98 : 493,087.47 = 79,406.98 : x
  2. Step 2: Convert to fraction form
    328,724.98/493,087.47 = 79,406.98/x
  3. Step 3: Cross multiply
    328,724.98x = 493,087.47 × 79,406.98
  4. Step 4: Simplify right side
    328,724.98x = 39,154,586,868.54
  5. Step 5: Solve for x
    x = 39,154,586,868.54/328,724.98
  6. Step 6: Final answer
    x = 119,110.47

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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.