Home / 345,865.98-515,360.69-308,136.11

Finding the Fourth Proportional to 345,865.98, 515,360.69 and 308,136.11

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Solution

The fourth proportional to 345,865.98, 515,360.69 and 308,136.11 is: 459,140.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,865.98 : 515,360.69 = 308,136.11 : x
  2. Step 2: Convert to fraction form
    345,865.98/515,360.69 = 308,136.11/x
  3. Step 3: Cross multiply
    345,865.98x = 515,360.69 × 308,136.11
  4. Step 4: Simplify right side
    345,865.98x = 158,801,238,263.52
  5. Step 5: Solve for x
    x = 158,801,238,263.52/345,865.98
  6. Step 6: Final answer
    x = 459,140.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.