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Finding the Fourth Proportional to 303,055.47, 418,395.96 and 269,428.59

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Solution

The fourth proportional to 303,055.47, 418,395.96 and 269,428.59 is: 371,970.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,055.47 : 418,395.96 = 269,428.59 : x
  2. Step 2: Convert to fraction form
    303,055.47/418,395.96 = 269,428.59/x
  3. Step 3: Cross multiply
    303,055.47x = 418,395.96 × 269,428.59
  4. Step 4: Simplify right side
    303,055.47x = 112,727,833,564.50
  5. Step 5: Solve for x
    x = 112,727,833,564.50/303,055.47
  6. Step 6: Final answer
    x = 371,970.96

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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.