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Finding the Fourth Proportional to 238,745.70, 358,122.47 and 80,978.22

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Solution

The fourth proportional to 238,745.70, 358,122.47 and 80,978.22 is: 121,468.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,745.70 : 358,122.47 = 80,978.22 : x
  2. Step 2: Convert to fraction form
    238,745.70/358,122.47 = 80,978.22/x
  3. Step 3: Cross multiply
    238,745.70x = 358,122.47 × 80,978.22
  4. Step 4: Simplify right side
    238,745.70x = 29,000,119,757.71
  5. Step 5: Solve for x
    x = 29,000,119,757.71/238,745.70
  6. Step 6: Final answer
    x = 121,468.66

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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.