Home / 379,421.20-569,058.90-113,190.40

Finding the Fourth Proportional to 379,421.20, 569,058.90 and 113,190.40

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Solution

The fourth proportional to 379,421.20, 569,058.90 and 113,190.40 is: 169,763.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,421.20 : 569,058.90 = 113,190.40 : x
  2. Step 2: Convert to fraction form
    379,421.20/569,058.90 = 113,190.40/x
  3. Step 3: Cross multiply
    379,421.20x = 569,058.90 × 113,190.40
  4. Step 4: Simplify right side
    379,421.20x = 64,412,004,514.56
  5. Step 5: Solve for x
    x = 64,412,004,514.56/379,421.20
  6. Step 6: Final answer
    x = 169,763.85

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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.