Home / 387,922.39-535,285.87-215,799.67

Finding the Fourth Proportional to 387,922.39, 535,285.87 and 215,799.67

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Solution

The fourth proportional to 387,922.39, 535,285.87 and 215,799.67 is: 297,777.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,922.39 : 535,285.87 = 215,799.67 : x
  2. Step 2: Convert to fraction form
    387,922.39/535,285.87 = 215,799.67/x
  3. Step 3: Cross multiply
    387,922.39x = 535,285.87 × 215,799.67
  4. Step 4: Simplify right side
    387,922.39x = 115,514,512,725.78
  5. Step 5: Solve for x
    x = 115,514,512,725.78/387,922.39
  6. Step 6: Final answer
    x = 297,777.38

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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.