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Finding the Fourth Proportional to 292,485.50, 438,728.31 and 105,496.98

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Solution

The fourth proportional to 292,485.50, 438,728.31 and 105,496.98 is: 158,245.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,485.50 : 438,728.31 = 105,496.98 : x
  2. Step 2: Convert to fraction form
    292,485.50/438,728.31 = 105,496.98/x
  3. Step 3: Cross multiply
    292,485.50x = 438,728.31 × 105,496.98
  4. Step 4: Simplify right side
    292,485.50x = 46,284,511,745.50
  5. Step 5: Solve for x
    x = 46,284,511,745.50/292,485.50
  6. Step 6: Final answer
    x = 158,245.49

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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.