Home / 382,714.47-528,077.88-221,561.73

Finding the Fourth Proportional to 382,714.47, 528,077.88 and 221,561.73

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Solution

The fourth proportional to 382,714.47, 528,077.88 and 221,561.73 is: 305,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,714.47 : 528,077.88 = 221,561.73 : x
  2. Step 2: Convert to fraction form
    382,714.47/528,077.88 = 221,561.73/x
  3. Step 3: Cross multiply
    382,714.47x = 528,077.88 × 221,561.73
  4. Step 4: Simplify right side
    382,714.47x = 117,001,848,667.53
  5. Step 5: Solve for x
    x = 117,001,848,667.53/382,714.47
  6. Step 6: Final answer
    x = 305,715.77

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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.