Home / 353,890.80-529,799.40-312,418.80

Finding the Fourth Proportional to 353,890.80, 529,799.40 and 312,418.80

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Solution

The fourth proportional to 353,890.80, 529,799.40 and 312,418.80 is: 467,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,890.80 : 529,799.40 = 312,418.80 : x
  2. Step 2: Convert to fraction form
    353,890.80/529,799.40 = 312,418.80/x
  3. Step 3: Cross multiply
    353,890.80x = 529,799.40 × 312,418.80
  4. Step 4: Simplify right side
    353,890.80x = 165,519,292,788.72
  5. Step 5: Solve for x
    x = 165,519,292,788.72/353,890.80
  6. Step 6: Final answer
    x = 467,712.90

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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.