Home / 387,215.07-534,358.94-215,133.27

Finding the Fourth Proportional to 387,215.07, 534,358.94 and 215,133.27

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Solution

The fourth proportional to 387,215.07, 534,358.94 and 215,133.27 is: 296,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,215.07 : 534,358.94 = 215,133.27 : x
  2. Step 2: Convert to fraction form
    387,215.07/534,358.94 = 215,133.27/x
  3. Step 3: Cross multiply
    387,215.07x = 534,358.94 × 215,133.27
  4. Step 4: Simplify right side
    387,215.07x = 114,958,385,040.27
  5. Step 5: Solve for x
    x = 114,958,385,040.27/387,215.07
  6. Step 6: Final answer
    x = 296,885.10

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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.