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Finding the Fourth Proportional to 554,969.76, 765,858.27 and 300,320.95

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Solution

The fourth proportional to 554,969.76, 765,858.27 and 300,320.95 is: 414,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,969.76 : 765,858.27 = 300,320.95 : x
  2. Step 2: Convert to fraction form
    554,969.76/765,858.27 = 300,320.95/x
  3. Step 3: Cross multiply
    554,969.76x = 765,858.27 × 300,320.95
  4. Step 4: Simplify right side
    554,969.76x = 230,003,283,211.76
  5. Step 5: Solve for x
    x = 230,003,283,211.76/554,969.76
  6. Step 6: Final answer
    x = 414,442.91

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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.