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Finding the Fourth Proportional to 380,755.84, 525,429.84 and 211,005.76

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Solution

The fourth proportional to 380,755.84, 525,429.84 and 211,005.76 is: 291,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,755.84 : 525,429.84 = 211,005.76 : x
  2. Step 2: Convert to fraction form
    380,755.84/525,429.84 = 211,005.76/x
  3. Step 3: Cross multiply
    380,755.84x = 525,429.84 × 211,005.76
  4. Step 4: Simplify right side
    380,755.84x = 110,868,722,715.88
  5. Step 5: Solve for x
    x = 110,868,722,715.88/380,755.84
  6. Step 6: Final answer
    x = 291,180.62

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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.