Home / 387,215.36-580,473.12-268,942.40

Finding the Fourth Proportional to 387,215.36, 580,473.12 and 268,942.40

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Solution

The fourth proportional to 387,215.36, 580,473.12 and 268,942.40 is: 403,170.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,215.36 : 580,473.12 = 268,942.40 : x
  2. Step 2: Convert to fraction form
    387,215.36/580,473.12 = 268,942.40/x
  3. Step 3: Cross multiply
    387,215.36x = 580,473.12 × 268,942.40
  4. Step 4: Simplify right side
    387,215.36x = 156,113,834,028.29
  5. Step 5: Solve for x
    x = 156,113,834,028.29/387,215.36
  6. Step 6: Final answer
    x = 403,170.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.