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Finding the Fourth Proportional to 303,532.36, 418,916.90 and 169,405

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Solution

The fourth proportional to 303,532.36, 418,916.90 and 169,405 is: 233,802.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,532.36 : 418,916.90 = 169,405 : x
  2. Step 2: Convert to fraction form
    303,532.36/418,916.90 = 169,405/x
  3. Step 3: Cross multiply
    303,532.36x = 418,916.90 × 169,405
  4. Step 4: Simplify right side
    303,532.36x = 70,966,617,444.50
  5. Step 5: Solve for x
    x = 70,966,617,444.50/303,532.36
  6. Step 6: Final answer
    x = 233,802.48

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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.