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Finding the Fourth Proportional to 282,485.34, 423,728.01 and 72,115.74

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Solution

The fourth proportional to 282,485.34, 423,728.01 and 72,115.74 is: 108,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,485.34 : 423,728.01 = 72,115.74 : x
  2. Step 2: Convert to fraction form
    282,485.34/423,728.01 = 72,115.74/x
  3. Step 3: Cross multiply
    282,485.34x = 423,728.01 × 72,115.74
  4. Step 4: Simplify right side
    282,485.34x = 30,557,458,999.88
  5. Step 5: Solve for x
    x = 30,557,458,999.88/282,485.34
  6. Step 6: Final answer
    x = 108,173.61

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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.