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Finding the Fourth Proportional to 555,412.19, 766,468.64 and 300,763.31

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Solution

The fourth proportional to 555,412.19, 766,468.64 and 300,763.31 is: 415,053.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,412.19 : 766,468.64 = 300,763.31 : x
  2. Step 2: Convert to fraction form
    555,412.19/766,468.64 = 300,763.31/x
  3. Step 3: Cross multiply
    555,412.19x = 766,468.64 × 300,763.31
  4. Step 4: Simplify right side
    555,412.19x = 230,525,643,673.78
  5. Step 5: Solve for x
    x = 230,525,643,673.78/555,412.19
  6. Step 6: Final answer
    x = 415,053.27

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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.