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Finding the Fourth Proportional to 379,041.66, 523,077.36 and 217,928.22

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Solution

The fourth proportional to 379,041.66, 523,077.36 and 217,928.22 is: 300,740.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,041.66 : 523,077.36 = 217,928.22 : x
  2. Step 2: Convert to fraction form
    379,041.66/523,077.36 = 217,928.22/x
  3. Step 3: Cross multiply
    379,041.66x = 523,077.36 × 217,928.22
  4. Step 4: Simplify right side
    379,041.66x = 113,993,317,987.10
  5. Step 5: Solve for x
    x = 113,993,317,987.10/379,041.66
  6. Step 6: Final answer
    x = 300,740.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.