Home / 455,639.68-683,605.76-218,999.52

Finding the Fourth Proportional to 455,639.68, 683,605.76 and 218,999.52

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Solution

The fourth proportional to 455,639.68, 683,605.76 and 218,999.52 is: 328,569.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,639.68 : 683,605.76 = 218,999.52 : x
  2. Step 2: Convert to fraction form
    455,639.68/683,605.76 = 218,999.52/x
  3. Step 3: Cross multiply
    455,639.68x = 683,605.76 × 218,999.52
  4. Step 4: Simplify right side
    455,639.68x = 149,709,333,309.24
  5. Step 5: Solve for x
    x = 149,709,333,309.24/455,639.68
  6. Step 6: Final answer
    x = 328,569.57

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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.