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Finding the Fourth Proportional to 317,513.76, 476,021.76 and 165,343.20

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Solution

The fourth proportional to 317,513.76, 476,021.76 and 165,343.20 is: 247,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,513.76 : 476,021.76 = 165,343.20 : x
  2. Step 2: Convert to fraction form
    317,513.76/476,021.76 = 165,343.20/x
  3. Step 3: Cross multiply
    317,513.76x = 476,021.76 × 165,343.20
  4. Step 4: Simplify right side
    317,513.76x = 78,706,961,068.03
  5. Step 5: Solve for x
    x = 78,706,961,068.03/317,513.76
  6. Step 6: Final answer
    x = 247,885.20

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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.