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Finding the Fourth Proportional to 438,558.48, 658,100.12 and 189,240.48

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Solution

The fourth proportional to 438,558.48, 658,100.12 and 189,240.48 is: 283,973.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,558.48 : 658,100.12 = 189,240.48 : x
  2. Step 2: Convert to fraction form
    438,558.48/658,100.12 = 189,240.48/x
  3. Step 3: Cross multiply
    438,558.48x = 658,100.12 × 189,240.48
  4. Step 4: Simplify right side
    438,558.48x = 124,539,182,596.86
  5. Step 5: Solve for x
    x = 124,539,182,596.86/438,558.48
  6. Step 6: Final answer
    x = 283,973.95

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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.