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Finding the Fourth Proportional to 555,017.18, 765,926.16 and 300,368.44

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Solution

The fourth proportional to 555,017.18, 765,926.16 and 300,368.44 is: 414,509.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,017.18 : 765,926.16 = 300,368.44 : x
  2. Step 2: Convert to fraction form
    555,017.18/765,926.16 = 300,368.44/x
  3. Step 3: Cross multiply
    555,017.18x = 765,926.16 × 300,368.44
  4. Step 4: Simplify right side
    555,017.18x = 230,060,042,004.76
  5. Step 5: Solve for x
    x = 230,060,042,004.76/555,017.18
  6. Step 6: Final answer
    x = 414,509.77

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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.