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Finding the Fourth Proportional to 508,288.18, 701,419.77 and 281,954.74

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Solution

The fourth proportional to 508,288.18, 701,419.77 and 281,954.74 is: 389,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,288.18 : 701,419.77 = 281,954.74 : x
  2. Step 2: Convert to fraction form
    508,288.18/701,419.77 = 281,954.74/x
  3. Step 3: Cross multiply
    508,288.18x = 701,419.77 × 281,954.74
  4. Step 4: Simplify right side
    508,288.18x = 197,768,628,881.21
  5. Step 5: Solve for x
    x = 197,768,628,881.21/508,288.18
  6. Step 6: Final answer
    x = 389,087.60

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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.