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Finding the Fourth Proportional to 290,788.52, 436,293.95 and 113,419.17

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Solution

The fourth proportional to 290,788.52, 436,293.95 and 113,419.17 is: 170,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,788.52 : 436,293.95 = 113,419.17 : x
  2. Step 2: Convert to fraction form
    290,788.52/436,293.95 = 113,419.17/x
  3. Step 3: Cross multiply
    290,788.52x = 436,293.95 × 113,419.17
  4. Step 4: Simplify right side
    290,788.52x = 49,484,097,117.93
  5. Step 5: Solve for x
    x = 49,484,097,117.93/290,788.52
  6. Step 6: Final answer
    x = 170,172.12

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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.