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Finding the Fourth Proportional to 259,743.60, 389,615.40 and 242,028.90

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Solution

The fourth proportional to 259,743.60, 389,615.40 and 242,028.90 is: 363,043.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,743.60 : 389,615.40 = 242,028.90 : x
  2. Step 2: Convert to fraction form
    259,743.60/389,615.40 = 242,028.90/x
  3. Step 3: Cross multiply
    259,743.60x = 389,615.40 × 242,028.90
  4. Step 4: Simplify right side
    259,743.60x = 94,298,186,685.06
  5. Step 5: Solve for x
    x = 94,298,186,685.06/259,743.60
  6. Step 6: Final answer
    x = 363,043.35

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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.