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Finding the Fourth Proportional to 401,474.40, 601,520.40 and 339,266.40

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Solution

The fourth proportional to 401,474.40, 601,520.40 and 339,266.40 is: 508,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,474.40 : 601,520.40 = 339,266.40 : x
  2. Step 2: Convert to fraction form
    401,474.40/601,520.40 = 339,266.40/x
  3. Step 3: Cross multiply
    401,474.40x = 601,520.40 × 339,266.40
  4. Step 4: Simplify right side
    401,474.40x = 204,075,660,634.56
  5. Step 5: Solve for x
    x = 204,075,660,634.56/401,474.40
  6. Step 6: Final answer
    x = 508,315.50

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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.