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Finding the Fourth Proportional to 317,217.40, 437,530.50 and 269,395

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Solution

The fourth proportional to 317,217.40, 437,530.50 and 269,395 is: 371,570.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,217.40 : 437,530.50 = 269,395 : x
  2. Step 2: Convert to fraction form
    317,217.40/437,530.50 = 269,395/x
  3. Step 3: Cross multiply
    317,217.40x = 437,530.50 × 269,395
  4. Step 4: Simplify right side
    317,217.40x = 117,868,529,047.50
  5. Step 5: Solve for x
    x = 117,868,529,047.50/317,217.40
  6. Step 6: Final answer
    x = 371,570.19

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Why These Related Problems?

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