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Finding the Fourth Proportional to 316,189.50, 436,483.80 and 201,621.72

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Solution

The fourth proportional to 316,189.50, 436,483.80 and 201,621.72 is: 278,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,189.50 : 436,483.80 = 201,621.72 : x
  2. Step 2: Convert to fraction form
    316,189.50/436,483.80 = 201,621.72/x
  3. Step 3: Cross multiply
    316,189.50x = 436,483.80 × 201,621.72
  4. Step 4: Simplify right side
    316,189.50x = 88,004,614,508.14
  5. Step 5: Solve for x
    x = 88,004,614,508.14/316,189.50
  6. Step 6: Final answer
    x = 278,328.71

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.