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Finding the Fourth Proportional to 411,026.40, 616,539.60 and 115,538.40

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Solution

The fourth proportional to 411,026.40, 616,539.60 and 115,538.40 is: 173,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,026.40 : 616,539.60 = 115,538.40 : x
  2. Step 2: Convert to fraction form
    411,026.40/616,539.60 = 115,538.40/x
  3. Step 3: Cross multiply
    411,026.40x = 616,539.60 × 115,538.40
  4. Step 4: Simplify right side
    411,026.40x = 71,233,998,920.64
  5. Step 5: Solve for x
    x = 71,233,998,920.64/411,026.40
  6. Step 6: Final answer
    x = 173,307.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.