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Finding the Fourth Proportional to 344,078.80, 516,118.20 and 265,346.80

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Solution

The fourth proportional to 344,078.80, 516,118.20 and 265,346.80 is: 398,020.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,078.80 : 516,118.20 = 265,346.80 : x
  2. Step 2: Convert to fraction form
    344,078.80/516,118.20 = 265,346.80/x
  3. Step 3: Cross multiply
    344,078.80x = 516,118.20 × 265,346.80
  4. Step 4: Simplify right side
    344,078.80x = 136,950,312,791.76
  5. Step 5: Solve for x
    x = 136,950,312,791.76/344,078.80
  6. Step 6: Final answer
    x = 398,020.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.