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Finding the Fourth Proportional to 455,640.68, 683,607.26 and 219,000.52

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Solution

The fourth proportional to 455,640.68, 683,607.26 and 219,000.52 is: 328,571.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,640.68 : 683,607.26 = 219,000.52 : x
  2. Step 2: Convert to fraction form
    455,640.68/683,607.26 = 219,000.52/x
  3. Step 3: Cross multiply
    455,640.68x = 683,607.26 × 219,000.52
  4. Step 4: Simplify right side
    455,640.68x = 149,710,345,415.78
  5. Step 5: Solve for x
    x = 149,710,345,415.78/455,640.68
  6. Step 6: Final answer
    x = 328,571.07

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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.