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Finding the Fourth Proportional to 553,887.21, 830,498.64 and 253,992.12

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Solution

The fourth proportional to 553,887.21, 830,498.64 and 253,992.12 is: 380,835.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,887.21 : 830,498.64 = 253,992.12 : x
  2. Step 2: Convert to fraction form
    553,887.21/830,498.64 = 253,992.12/x
  3. Step 3: Cross multiply
    553,887.21x = 830,498.64 × 253,992.12
  4. Step 4: Simplify right side
    553,887.21x = 210,940,110,230.72
  5. Step 5: Solve for x
    x = 210,940,110,230.72/553,887.21
  6. Step 6: Final answer
    x = 380,835.86

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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.