Home / 385,540.40-532,045.68-215,774.53

Finding the Fourth Proportional to 385,540.40, 532,045.68 and 215,774.53

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Solution

The fourth proportional to 385,540.40, 532,045.68 and 215,774.53 is: 297,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,540.40 : 532,045.68 = 215,774.53 : x
  2. Step 2: Convert to fraction form
    385,540.40/532,045.68 = 215,774.53/x
  3. Step 3: Cross multiply
    385,540.40x = 532,045.68 × 215,774.53
  4. Step 4: Simplify right side
    385,540.40x = 114,801,903,880.30
  5. Step 5: Solve for x
    x = 114,801,903,880.30/385,540.40
  6. Step 6: Final answer
    x = 297,768.80

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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.