Home / 238,415.12-357,400.40-80,533.20

Finding the Fourth Proportional to 238,415.12, 357,400.40 and 80,533.20

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Solution

The fourth proportional to 238,415.12, 357,400.40 and 80,533.20 is: 120,724.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,415.12 : 357,400.40 = 80,533.20 : x
  2. Step 2: Convert to fraction form
    238,415.12/357,400.40 = 80,533.20/x
  3. Step 3: Cross multiply
    238,415.12x = 357,400.40 × 80,533.20
  4. Step 4: Simplify right side
    238,415.12x = 28,782,597,893.28
  5. Step 5: Solve for x
    x = 28,782,597,893.28/238,415.12
  6. Step 6: Final answer
    x = 120,724.72

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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.