Home / 385,172.38-531,536.07-215,407.18

Finding the Fourth Proportional to 385,172.38, 531,536.07 and 215,407.18

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Solution

The fourth proportional to 385,172.38, 531,536.07 and 215,407.18 is: 297,260.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,172.38 : 531,536.07 = 215,407.18 : x
  2. Step 2: Convert to fraction form
    385,172.38/531,536.07 = 215,407.18/x
  3. Step 3: Cross multiply
    385,172.38x = 531,536.07 × 215,407.18
  4. Step 4: Simplify right side
    385,172.38x = 114,496,685,906.98
  5. Step 5: Solve for x
    x = 114,496,685,906.98/385,172.38
  6. Step 6: Final answer
    x = 297,260.89

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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.