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Finding the Fourth Proportional to 447,112.80, 670,474.80 and 147,477.60

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Solution

The fourth proportional to 447,112.80, 670,474.80 and 147,477.60 is: 221,152.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,112.80 : 670,474.80 = 147,477.60 : x
  2. Step 2: Convert to fraction form
    447,112.80/670,474.80 = 147,477.60/x
  3. Step 3: Cross multiply
    447,112.80x = 670,474.80 × 147,477.60
  4. Step 4: Simplify right side
    447,112.80x = 98,880,014,364.48
  5. Step 5: Solve for x
    x = 98,880,014,364.48/447,112.80
  6. Step 6: Final answer
    x = 221,152.28

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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.