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Finding the Fourth Proportional to 660,745.62, 991,155.96 and 187,393.50

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Solution

The fourth proportional to 660,745.62, 991,155.96 and 187,393.50 is: 281,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,745.62 : 991,155.96 = 187,393.50 : x
  2. Step 2: Convert to fraction form
    660,745.62/991,155.96 = 187,393.50/x
  3. Step 3: Cross multiply
    660,745.62x = 991,155.96 × 187,393.50
  4. Step 4: Simplify right side
    660,745.62x = 185,736,184,390.26
  5. Step 5: Solve for x
    x = 185,736,184,390.26/660,745.62
  6. Step 6: Final answer
    x = 281,100.89

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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.