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Finding the Fourth Proportional to 438,416.55, 657,624.83 and 122,832.45

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Solution

The fourth proportional to 438,416.55, 657,624.83 and 122,832.45 is: 184,248.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,416.55 : 657,624.83 = 122,832.45 : x
  2. Step 2: Convert to fraction form
    438,416.55/657,624.83 = 122,832.45/x
  3. Step 3: Cross multiply
    438,416.55x = 657,624.83 × 122,832.45
  4. Step 4: Simplify right side
    438,416.55x = 80,777,668,435.57
  5. Step 5: Solve for x
    x = 80,777,668,435.57/438,416.55
  6. Step 6: Final answer
    x = 184,248.68

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Similar ratio
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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.