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Finding the Fourth Proportional to 420,047.40, 629,907.30 and 183,228.60

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Solution

The fourth proportional to 420,047.40, 629,907.30 and 183,228.60 is: 274,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,047.40 : 629,907.30 = 183,228.60 : x
  2. Step 2: Convert to fraction form
    420,047.40/629,907.30 = 183,228.60/x
  3. Step 3: Cross multiply
    420,047.40x = 629,907.30 × 183,228.60
  4. Step 4: Simplify right side
    420,047.40x = 115,417,032,708.78
  5. Step 5: Solve for x
    x = 115,417,032,708.78/420,047.40
  6. Step 6: Final answer
    x = 274,771.45

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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.