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Finding the Fourth Proportional to 388,967.92, 583,451.97 and 122,749.18

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Solution

The fourth proportional to 388,967.92, 583,451.97 and 122,749.18 is: 184,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,967.92 : 583,451.97 = 122,749.18 : x
  2. Step 2: Convert to fraction form
    388,967.92/583,451.97 = 122,749.18/x
  3. Step 3: Cross multiply
    388,967.92x = 583,451.97 × 122,749.18
  4. Step 4: Simplify right side
    388,967.92x = 71,618,250,886.88
  5. Step 5: Solve for x
    x = 71,618,250,886.88/388,967.92
  6. Step 6: Final answer
    x = 184,123.80

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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.