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Finding the Fourth Proportional to 557,657.07, 769,573.76 and 303,012.51

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Solution

The fourth proportional to 557,657.07, 769,573.76 and 303,012.51 is: 418,161.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,657.07 : 769,573.76 = 303,012.51 : x
  2. Step 2: Convert to fraction form
    557,657.07/769,573.76 = 303,012.51/x
  3. Step 3: Cross multiply
    557,657.07x = 769,573.76 × 303,012.51
  4. Step 4: Simplify right side
    557,657.07x = 233,190,475,132.68
  5. Step 5: Solve for x
    x = 233,190,475,132.68/557,657.07
  6. Step 6: Final answer
    x = 418,161.07

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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.