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Finding the Fourth Proportional to 290,227.77, 435,509.73 and 121,733.10

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Solution

The fourth proportional to 290,227.77, 435,509.73 and 121,733.10 is: 182,670.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,227.77 : 435,509.73 = 121,733.10 : x
  2. Step 2: Convert to fraction form
    290,227.77/435,509.73 = 121,733.10/x
  3. Step 3: Cross multiply
    290,227.77x = 435,509.73 × 121,733.10
  4. Step 4: Simplify right side
    290,227.77x = 53,015,949,513.06
  5. Step 5: Solve for x
    x = 53,015,949,513.06/290,227.77
  6. Step 6: Final answer
    x = 182,670.15

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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.