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Finding the Fourth Proportional to 201,314.90, 302,010.46 and 66,386.72

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Solution

The fourth proportional to 201,314.90, 302,010.46 and 66,386.72 is: 99,592.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,314.90 : 302,010.46 = 66,386.72 : x
  2. Step 2: Convert to fraction form
    201,314.90/302,010.46 = 66,386.72/x
  3. Step 3: Cross multiply
    201,314.90x = 302,010.46 × 66,386.72
  4. Step 4: Simplify right side
    201,314.90x = 20,049,483,845.09
  5. Step 5: Solve for x
    x = 20,049,483,845.09/201,314.90
  6. Step 6: Final answer
    x = 99,592.65

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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.