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Finding the Fourth Proportional to 355,590.40, 533,385.60 and 328,556.80

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Solution

The fourth proportional to 355,590.40, 533,385.60 and 328,556.80 is: 492,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,590.40 : 533,385.60 = 328,556.80 : x
  2. Step 2: Convert to fraction form
    355,590.40/533,385.60 = 328,556.80/x
  3. Step 3: Cross multiply
    355,590.40x = 533,385.60 × 328,556.80
  4. Step 4: Simplify right side
    355,590.40x = 175,247,465,902.08
  5. Step 5: Solve for x
    x = 175,247,465,902.08/355,590.40
  6. Step 6: Final answer
    x = 492,835.20

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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.