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Finding the Fourth Proportional to 554,985.06, 765,881.76 and 300,336.25

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Solution

The fourth proportional to 554,985.06, 765,881.76 and 300,336.25 is: 414,465.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,985.06 : 765,881.76 = 300,336.25 : x
  2. Step 2: Convert to fraction form
    554,985.06/765,881.76 = 300,336.25/x
  3. Step 3: Cross multiply
    554,985.06x = 765,881.76 × 300,336.25
  4. Step 4: Simplify right side
    554,985.06x = 230,022,055,741.80
  5. Step 5: Solve for x
    x = 230,022,055,741.80/554,985.06
  6. Step 6: Final answer
    x = 414,465.31

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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.