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Finding the Fourth Proportional to 290,267.45, 435,428.66 and 112,788.15

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Solution

The fourth proportional to 290,267.45, 435,428.66 and 112,788.15 is: 169,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,267.45 : 435,428.66 = 112,788.15 : x
  2. Step 2: Convert to fraction form
    290,267.45/435,428.66 = 112,788.15/x
  3. Step 3: Cross multiply
    290,267.45x = 435,428.66 × 112,788.15
  4. Step 4: Simplify right side
    290,267.45x = 49,111,191,667.49
  5. Step 5: Solve for x
    x = 49,111,191,667.49/290,267.45
  6. Step 6: Final answer
    x = 169,192.90

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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.