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Finding the Fourth Proportional to 338,198.20, 507,355.80 and 113,580.40

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Solution

The fourth proportional to 338,198.20, 507,355.80 and 113,580.40 is: 170,390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,198.20 : 507,355.80 = 113,580.40 : x
  2. Step 2: Convert to fraction form
    338,198.20/507,355.80 = 113,580.40/x
  3. Step 3: Cross multiply
    338,198.20x = 507,355.80 × 113,580.40
  4. Step 4: Simplify right side
    338,198.20x = 57,625,674,706.32
  5. Step 5: Solve for x
    x = 57,625,674,706.32/338,198.20
  6. Step 6: Final answer
    x = 170,390.25

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1.5x scale

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.