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Finding the Fourth Proportional to 447,386.40, 670,204.80 and 269,364.60

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Solution

The fourth proportional to 447,386.40, 670,204.80 and 269,364.60 is: 403,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,386.40 : 670,204.80 = 269,364.60 : x
  2. Step 2: Convert to fraction form
    447,386.40/670,204.80 = 269,364.60/x
  3. Step 3: Cross multiply
    447,386.40x = 670,204.80 × 269,364.60
  4. Step 4: Simplify right side
    447,386.40x = 180,529,447,870.08
  5. Step 5: Solve for x
    x = 180,529,447,870.08/447,386.40
  6. Step 6: Final answer
    x = 403,520.20

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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.