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Finding the Fourth Proportional to 628,898.64, 943,495.56 and 208,174.50

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Solution

The fourth proportional to 628,898.64, 943,495.56 and 208,174.50 is: 312,310.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,898.64 : 943,495.56 = 208,174.50 : x
  2. Step 2: Convert to fraction form
    628,898.64/943,495.56 = 208,174.50/x
  3. Step 3: Cross multiply
    628,898.64x = 943,495.56 × 208,174.50
  4. Step 4: Simplify right side
    628,898.64x = 196,411,716,455.22
  5. Step 5: Solve for x
    x = 196,411,716,455.22/628,898.64
  6. Step 6: Final answer
    x = 312,310.61

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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.