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Finding the Fourth Proportional to 328,556.20, 460,911.80 and 328,556.20

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Solution

The fourth proportional to 328,556.20, 460,911.80 and 328,556.20 is: 460,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,556.20 : 460,911.80 = 328,556.20 : x
  2. Step 2: Convert to fraction form
    328,556.20/460,911.80 = 328,556.20/x
  3. Step 3: Cross multiply
    328,556.20x = 460,911.80 × 328,556.20
  4. Step 4: Simplify right side
    328,556.20x = 151,435,429,543.16
  5. Step 5: Solve for x
    x = 151,435,429,543.16/328,556.20
  6. Step 6: Final answer
    x = 460,911.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.