Home / 385,667.94-578,280.41-205,531.59

Finding the Fourth Proportional to 385,667.94, 578,280.41 and 205,531.59

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Solution

The fourth proportional to 385,667.94, 578,280.41 and 205,531.59 is: 308,179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,667.94 : 578,280.41 = 205,531.59 : x
  2. Step 2: Convert to fraction form
    385,667.94/578,280.41 = 205,531.59/x
  3. Step 3: Cross multiply
    385,667.94x = 578,280.41 × 205,531.59
  4. Step 4: Simplify right side
    385,667.94x = 118,854,891,105.49
  5. Step 5: Solve for x
    x = 118,854,891,105.49/385,667.94
  6. Step 6: Final answer
    x = 308,179.34

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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.