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Finding the Fourth Proportional to 288,500.76, 397,730.70 and 248,639.04

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Solution

The fourth proportional to 288,500.76, 397,730.70 and 248,639.04 is: 342,776.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,500.76 : 397,730.70 = 248,639.04 : x
  2. Step 2: Convert to fraction form
    288,500.76/397,730.70 = 248,639.04/x
  3. Step 3: Cross multiply
    288,500.76x = 397,730.70 × 248,639.04
  4. Step 4: Simplify right side
    288,500.76x = 98,891,379,426.53
  5. Step 5: Solve for x
    x = 98,891,379,426.53/288,500.76
  6. Step 6: Final answer
    x = 342,776.84

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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.