Home / 385,373.18-531,815.46-215,607.44

Finding the Fourth Proportional to 385,373.18, 531,815.46 and 215,607.44

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Solution

The fourth proportional to 385,373.18, 531,815.46 and 215,607.44 is: 297,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,373.18 : 531,815.46 = 215,607.44 : x
  2. Step 2: Convert to fraction form
    385,373.18/531,815.46 = 215,607.44/x
  3. Step 3: Cross multiply
    385,373.18x = 531,815.46 × 215,607.44
  4. Step 4: Simplify right side
    385,373.18x = 114,663,370,404.03
  5. Step 5: Solve for x
    x = 114,663,370,404.03/385,373.18
  6. Step 6: Final answer
    x = 297,538.53

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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.