Home / 385,669.62-578,723.13-208,172.70

Finding the Fourth Proportional to 385,669.62, 578,723.13 and 208,172.70

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Solution

The fourth proportional to 385,669.62, 578,723.13 and 208,172.70 is: 312,377.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,669.62 : 578,723.13 = 208,172.70 : x
  2. Step 2: Convert to fraction form
    385,669.62/578,723.13 = 208,172.70/x
  3. Step 3: Cross multiply
    385,669.62x = 578,723.13 × 208,172.70
  4. Step 4: Simplify right side
    385,669.62x = 120,474,356,524.55
  5. Step 5: Solve for x
    x = 120,474,356,524.55/385,669.62
  6. Step 6: Final answer
    x = 312,377.10

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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.