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Finding the Fourth Proportional to 361,718.94, 540,948.57 and 276,355.74

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Solution

The fourth proportional to 361,718.94, 540,948.57 and 276,355.74 is: 413,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,718.94 : 540,948.57 = 276,355.74 : x
  2. Step 2: Convert to fraction form
    361,718.94/540,948.57 = 276,355.74/x
  3. Step 3: Cross multiply
    361,718.94x = 540,948.57 × 276,355.74
  4. Step 4: Simplify right side
    361,718.94x = 149,494,242,364.29
  5. Step 5: Solve for x
    x = 149,494,242,364.29/361,718.94
  6. Step 6: Final answer
    x = 413,288.40

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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.