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Finding the Fourth Proportional to 554,967.13, 765,855.31 and 300,318.32

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Solution

The fourth proportional to 554,967.13, 765,855.31 and 300,318.32 is: 414,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,967.13 : 765,855.31 = 300,318.32 : x
  2. Step 2: Convert to fraction form
    554,967.13/765,855.31 = 300,318.32/x
  3. Step 3: Cross multiply
    554,967.13x = 765,855.31 × 300,318.32
  4. Step 4: Simplify right side
    554,967.13x = 230,000,376,233.00
  5. Step 5: Solve for x
    x = 230,000,376,233.00/554,967.13
  6. Step 6: Final answer
    x = 414,439.64

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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.