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Finding the Fourth Proportional to 379,420.20, 569,057.40 and 113,189.40

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Solution

The fourth proportional to 379,420.20, 569,057.40 and 113,189.40 is: 169,762.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,420.20 : 569,057.40 = 113,189.40 : x
  2. Step 2: Convert to fraction form
    379,420.20/569,057.40 = 113,189.40/x
  3. Step 3: Cross multiply
    379,420.20x = 569,057.40 × 113,189.40
  4. Step 4: Simplify right side
    379,420.20x = 64,411,265,671.56
  5. Step 5: Solve for x
    x = 64,411,265,671.56/379,420.20
  6. Step 6: Final answer
    x = 169,762.35

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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.