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Finding the Fourth Proportional to 521,521.40, 782,087.70 and 184,431.80

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Solution

The fourth proportional to 521,521.40, 782,087.70 and 184,431.80 is: 276,578.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,521.40 : 782,087.70 = 184,431.80 : x
  2. Step 2: Convert to fraction form
    521,521.40/782,087.70 = 184,431.80/x
  3. Step 3: Cross multiply
    521,521.40x = 782,087.70 × 184,431.80
  4. Step 4: Simplify right side
    521,521.40x = 144,241,842,268.86
  5. Step 5: Solve for x
    x = 144,241,842,268.86/521,521.40
  6. Step 6: Final answer
    x = 276,578.95

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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.