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Finding the Fourth Proportional to 289,891.60, 434,837.40 and 124,003.60

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Solution

The fourth proportional to 289,891.60, 434,837.40 and 124,003.60 is: 186,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,891.60 : 434,837.40 = 124,003.60 : x
  2. Step 2: Convert to fraction form
    289,891.60/434,837.40 = 124,003.60/x
  3. Step 3: Cross multiply
    289,891.60x = 434,837.40 × 124,003.60
  4. Step 4: Simplify right side
    289,891.60x = 53,921,403,014.64
  5. Step 5: Solve for x
    x = 53,921,403,014.64/289,891.60
  6. Step 6: Final answer
    x = 186,005.40

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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.