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Finding the Fourth Proportional to 328,986.60, 493,479.90 and 298,477.95

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Solution

The fourth proportional to 328,986.60, 493,479.90 and 298,477.95 is: 447,716.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,986.60 : 493,479.90 = 298,477.95 : x
  2. Step 2: Convert to fraction form
    328,986.60/493,479.90 = 298,477.95/x
  3. Step 3: Cross multiply
    328,986.60x = 493,479.90 × 298,477.95
  4. Step 4: Simplify right side
    328,986.60x = 147,292,868,918.21
  5. Step 5: Solve for x
    x = 147,292,868,918.21/328,986.60
  6. Step 6: Final answer
    x = 447,716.93

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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.