Home / 385,274.06-531,649.32-215,475.38

Finding the Fourth Proportional to 385,274.06, 531,649.32 and 215,475.38

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Solution

The fourth proportional to 385,274.06, 531,649.32 and 215,475.38 is: 297,339.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,274.06 : 531,649.32 = 215,475.38 : x
  2. Step 2: Convert to fraction form
    385,274.06/531,649.32 = 215,475.38/x
  3. Step 3: Cross multiply
    385,274.06x = 531,649.32 × 215,475.38
  4. Step 4: Simplify right side
    385,274.06x = 114,557,339,253.74
  5. Step 5: Solve for x
    x = 114,557,339,253.74/385,274.06
  6. Step 6: Final answer
    x = 297,339.87

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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.