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Finding the Fourth Proportional to 290,781.63, 401,287.95 and 176,081.67

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Solution

The fourth proportional to 290,781.63, 401,287.95 and 176,081.67 is: 242,998.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,781.63 : 401,287.95 = 176,081.67 : x
  2. Step 2: Convert to fraction form
    290,781.63/401,287.95 = 176,081.67/x
  3. Step 3: Cross multiply
    290,781.63x = 401,287.95 × 176,081.67
  4. Step 4: Simplify right side
    290,781.63x = 70,659,452,386.88
  5. Step 5: Solve for x
    x = 70,659,452,386.88/290,781.63
  6. Step 6: Final answer
    x = 242,998.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.