Home / 284,840.40-427,228.20-74,499.60

Finding the Fourth Proportional to 284,840.40, 427,228.20 and 74,499.60

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Solution

The fourth proportional to 284,840.40, 427,228.20 and 74,499.60 is: 111,740.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,840.40 : 427,228.20 = 74,499.60 : x
  2. Step 2: Convert to fraction form
    284,840.40/427,228.20 = 74,499.60/x
  3. Step 3: Cross multiply
    284,840.40x = 427,228.20 × 74,499.60
  4. Step 4: Simplify right side
    284,840.40x = 31,828,330,008.72
  5. Step 5: Solve for x
    x = 31,828,330,008.72/284,840.40
  6. Step 6: Final answer
    x = 111,740.93

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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.