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Finding the Fourth Proportional to 312,885.68, 469,281 and 102,518.96

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Solution

The fourth proportional to 312,885.68, 469,281 and 102,518.96 is: 153,762.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,885.68 : 469,281 = 102,518.96 : x
  2. Step 2: Convert to fraction form
    312,885.68/469,281 = 102,518.96/x
  3. Step 3: Cross multiply
    312,885.68x = 469,281 × 102,518.96
  4. Step 4: Simplify right side
    312,885.68x = 48,110,200,067.76
  5. Step 5: Solve for x
    x = 48,110,200,067.76/312,885.68
  6. Step 6: Final answer
    x = 153,762.87

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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.