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Finding the Fourth Proportional to 438,215.04, 657,360.81 and 122,672.85

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Solution

The fourth proportional to 438,215.04, 657,360.81 and 122,672.85 is: 184,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,215.04 : 657,360.81 = 122,672.85 : x
  2. Step 2: Convert to fraction form
    438,215.04/657,360.81 = 122,672.85/x
  3. Step 3: Cross multiply
    438,215.04x = 657,360.81 × 122,672.85
  4. Step 4: Simplify right side
    438,215.04x = 80,640,324,041.01
  5. Step 5: Solve for x
    x = 80,640,324,041.01/438,215.04
  6. Step 6: Final answer
    x = 184,019.98

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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.