Home / 385,738.08-532,364.04-215,939.40

Finding the Fourth Proportional to 385,738.08, 532,364.04 and 215,939.40

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Solution

The fourth proportional to 385,738.08, 532,364.04 and 215,939.40 is: 298,021.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,738.08 : 532,364.04 = 215,939.40 : x
  2. Step 2: Convert to fraction form
    385,738.08/532,364.04 = 215,939.40/x
  3. Step 3: Cross multiply
    385,738.08x = 532,364.04 × 215,939.40
  4. Step 4: Simplify right side
    385,738.08x = 114,958,371,379.18
  5. Step 5: Solve for x
    x = 114,958,371,379.18/385,738.08
  6. Step 6: Final answer
    x = 298,021.84

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1.5x scale

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.