Home / 387,274.11-534,440.40-217,508.25

Finding the Fourth Proportional to 387,274.11, 534,440.40 and 217,508.25

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Solution

The fourth proportional to 387,274.11, 534,440.40 and 217,508.25 is: 300,162.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,274.11 : 534,440.40 = 217,508.25 : x
  2. Step 2: Convert to fraction form
    387,274.11/534,440.40 = 217,508.25/x
  3. Step 3: Cross multiply
    387,274.11x = 534,440.40 × 217,508.25
  4. Step 4: Simplify right side
    387,274.11x = 116,245,196,133.30
  5. Step 5: Solve for x
    x = 116,245,196,133.30/387,274.11
  6. Step 6: Final answer
    x = 300,162.58

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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.