Home / 387,666.11-534,938.28-215,556.31

Finding the Fourth Proportional to 387,666.11, 534,938.28 and 215,556.31

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Solution

The fourth proportional to 387,666.11, 534,938.28 and 215,556.31 is: 297,444.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,666.11 : 534,938.28 = 215,556.31 : x
  2. Step 2: Convert to fraction form
    387,666.11/534,938.28 = 215,556.31/x
  3. Step 3: Cross multiply
    387,666.11x = 534,938.28 × 215,556.31
  4. Step 4: Simplify right side
    387,666.11x = 115,309,320,377.20
  5. Step 5: Solve for x
    x = 115,309,320,377.20/387,666.11
  6. Step 6: Final answer
    x = 297,444.94

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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.