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Finding the Fourth Proportional to 438,189.62, 657,284.44 and 105,765.62

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Solution

The fourth proportional to 438,189.62, 657,284.44 and 105,765.62 is: 158,648.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,189.62 : 657,284.44 = 105,765.62 : x
  2. Step 2: Convert to fraction form
    438,189.62/657,284.44 = 105,765.62/x
  3. Step 3: Cross multiply
    438,189.62x = 657,284.44 × 105,765.62
  4. Step 4: Simplify right side
    438,189.62x = 69,518,096,312.95
  5. Step 5: Solve for x
    x = 69,518,096,312.95/438,189.62
  6. Step 6: Final answer
    x = 158,648.43

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Similar ratio
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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.