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Finding the Fourth Proportional to 555,080.45, 766,009.71 and 300,431.84

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Solution

The fourth proportional to 555,080.45, 766,009.71 and 300,431.84 is: 414,595.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,080.45 : 766,009.71 = 300,431.84 : x
  2. Step 2: Convert to fraction form
    555,080.45/766,009.71 = 300,431.84/x
  3. Step 3: Cross multiply
    555,080.45x = 766,009.71 × 300,431.84
  4. Step 4: Simplify right side
    555,080.45x = 230,133,702,803.12
  5. Step 5: Solve for x
    x = 230,133,702,803.12/555,080.45
  6. Step 6: Final answer
    x = 414,595.23

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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.