Home / 343,971.40-515,784.30-156,771.40

Finding the Fourth Proportional to 343,971.40, 515,784.30 and 156,771.40

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Solution

The fourth proportional to 343,971.40, 515,784.30 and 156,771.40 is: 235,078.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,971.40 : 515,784.30 = 156,771.40 : x
  2. Step 2: Convert to fraction form
    343,971.40/515,784.30 = 156,771.40/x
  3. Step 3: Cross multiply
    343,971.40x = 515,784.30 × 156,771.40
  4. Step 4: Simplify right side
    343,971.40x = 80,860,226,809.02
  5. Step 5: Solve for x
    x = 80,860,226,809.02/343,971.40
  6. Step 6: Final answer
    x = 235,078.34

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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.