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Finding the Fourth Proportional to 328,028.40, 492,042.60 and 286,556.40

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Solution

The fourth proportional to 328,028.40, 492,042.60 and 286,556.40 is: 429,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,028.40 : 492,042.60 = 286,556.40 : x
  2. Step 2: Convert to fraction form
    328,028.40/492,042.60 = 286,556.40/x
  3. Step 3: Cross multiply
    328,028.40x = 492,042.60 × 286,556.40
  4. Step 4: Simplify right side
    328,028.40x = 140,997,956,102.64
  5. Step 5: Solve for x
    x = 140,997,956,102.64/328,028.40
  6. Step 6: Final answer
    x = 429,834.60

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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.