Home / 385,269.68-531,722.52-215,538.80

Finding the Fourth Proportional to 385,269.68, 531,722.52 and 215,538.80

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Solution

The fourth proportional to 385,269.68, 531,722.52 and 215,538.80 is: 297,471.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,269.68 : 531,722.52 = 215,538.80 : x
  2. Step 2: Convert to fraction form
    385,269.68/531,722.52 = 215,538.80/x
  3. Step 3: Cross multiply
    385,269.68x = 531,722.52 × 215,538.80
  4. Step 4: Simplify right side
    385,269.68x = 114,606,833,893.78
  5. Step 5: Solve for x
    x = 114,606,833,893.78/385,269.68
  6. Step 6: Final answer
    x = 297,471.72

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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.