Home / 455,867.48-683,257.71-212,381.93

Finding the Fourth Proportional to 455,867.48, 683,257.71 and 212,381.93

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Solution

The fourth proportional to 455,867.48, 683,257.71 and 212,381.93 is: 318,319.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,867.48 : 683,257.71 = 212,381.93 : x
  2. Step 2: Convert to fraction form
    455,867.48/683,257.71 = 212,381.93/x
  3. Step 3: Cross multiply
    455,867.48x = 683,257.71 × 212,381.93
  4. Step 4: Simplify right side
    455,867.48x = 145,111,591,137.18
  5. Step 5: Solve for x
    x = 145,111,591,137.18/455,867.48
  6. Step 6: Final answer
    x = 318,319.69

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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.