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Finding the Fourth Proportional to 543,297.92, 749,737.32 and 298,281.45

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Solution

The fourth proportional to 543,297.92, 749,737.32 and 298,281.45 is: 411,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,297.92 : 749,737.32 = 298,281.45 : x
  2. Step 2: Convert to fraction form
    543,297.92/749,737.32 = 298,281.45/x
  3. Step 3: Cross multiply
    543,297.92x = 749,737.32 × 298,281.45
  4. Step 4: Simplify right side
    543,297.92x = 223,632,736,621.67
  5. Step 5: Solve for x
    x = 223,632,736,621.67/543,297.92
  6. Step 6: Final answer
    x = 411,620.83

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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.