Home / 387,256.65-534,412.44-215,202.62

Finding the Fourth Proportional to 387,256.65, 534,412.44 and 215,202.62

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Solution

The fourth proportional to 387,256.65, 534,412.44 and 215,202.62 is: 296,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,256.65 : 534,412.44 = 215,202.62 : x
  2. Step 2: Convert to fraction form
    387,256.65/534,412.44 = 215,202.62/x
  3. Step 3: Cross multiply
    387,256.65x = 534,412.44 × 215,202.62
  4. Step 4: Simplify right side
    387,256.65x = 115,006,954,576.53
  5. Step 5: Solve for x
    x = 115,006,954,576.53/387,256.65
  6. Step 6: Final answer
    x = 296,978.64

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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.