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Finding the Fourth Proportional to 303,564, 418,918.32 and 169,428

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Solution

The fourth proportional to 303,564, 418,918.32 and 169,428 is: 233,810.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,564 : 418,918.32 = 169,428 : x
  2. Step 2: Convert to fraction form
    303,564/418,918.32 = 169,428/x
  3. Step 3: Cross multiply
    303,564x = 418,918.32 × 169,428
  4. Step 4: Simplify right side
    303,564x = 70,976,493,120.96
  5. Step 5: Solve for x
    x = 70,976,493,120.96/303,564
  6. Step 6: Final answer
    x = 233,810.64

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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.