Home / 385,271.68-531,725.28-215,540.80

Finding the Fourth Proportional to 385,271.68, 531,725.28 and 215,540.80

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Solution

The fourth proportional to 385,271.68, 531,725.28 and 215,540.80 is: 297,474.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,271.68 : 531,725.28 = 215,540.80 : x
  2. Step 2: Convert to fraction form
    385,271.68/531,725.28 = 215,540.80/x
  3. Step 3: Cross multiply
    385,271.68x = 531,725.28 × 215,540.80
  4. Step 4: Simplify right side
    385,271.68x = 114,608,492,231.42
  5. Step 5: Solve for x
    x = 114,608,492,231.42/385,271.68
  6. Step 6: Final answer
    x = 297,474.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.