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Finding the Fourth Proportional to 344,110.80, 515,129.40 and 302,638.80

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Solution

The fourth proportional to 344,110.80, 515,129.40 and 302,638.80 is: 453,046.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,110.80 : 515,129.40 = 302,638.80 : x
  2. Step 2: Convert to fraction form
    344,110.80/515,129.40 = 302,638.80/x
  3. Step 3: Cross multiply
    344,110.80x = 515,129.40 × 302,638.80
  4. Step 4: Simplify right side
    344,110.80x = 155,898,143,460.72
  5. Step 5: Solve for x
    x = 155,898,143,460.72/344,110.80
  6. Step 6: Final answer
    x = 453,046.35

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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.