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Finding the Fourth Proportional to 149,840.80, 224,761.20 and 142,928.80

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Solution

The fourth proportional to 149,840.80, 224,761.20 and 142,928.80 is: 214,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,840.80 : 224,761.20 = 142,928.80 : x
  2. Step 2: Convert to fraction form
    149,840.80/224,761.20 = 142,928.80/x
  3. Step 3: Cross multiply
    149,840.80x = 224,761.20 × 142,928.80
  4. Step 4: Simplify right side
    149,840.80x = 32,124,848,602.56
  5. Step 5: Solve for x
    x = 32,124,848,602.56/149,840.80
  6. Step 6: Final answer
    x = 214,393.20

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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.