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Finding the Fourth Proportional to 208,533.44, 312,566.88 and 90,027.20

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Solution

The fourth proportional to 208,533.44, 312,566.88 and 90,027.20 is: 134,940.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,533.44 : 312,566.88 = 90,027.20 : x
  2. Step 2: Convert to fraction form
    208,533.44/312,566.88 = 90,027.20/x
  3. Step 3: Cross multiply
    208,533.44x = 312,566.88 × 90,027.20
  4. Step 4: Simplify right side
    208,533.44x = 28,139,521,019.14
  5. Step 5: Solve for x
    x = 28,139,521,019.14/208,533.44
  6. Step 6: Final answer
    x = 134,940.09

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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.