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Finding the Fourth Proportional to 278,737.80, 384,651.69 and 162,443.82

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Solution

The fourth proportional to 278,737.80, 384,651.69 and 162,443.82 is: 224,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,737.80 : 384,651.69 = 162,443.82 : x
  2. Step 2: Convert to fraction form
    278,737.80/384,651.69 = 162,443.82/x
  3. Step 3: Cross multiply
    278,737.80x = 384,651.69 × 162,443.82
  4. Step 4: Simplify right side
    278,737.80x = 62,484,289,893.06
  5. Step 5: Solve for x
    x = 62,484,289,893.06/278,737.80
  6. Step 6: Final answer
    x = 224,168.70

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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.