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Finding the Fourth Proportional to 380,553.94, 525,181.75 and 210,788.06

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Solution

The fourth proportional to 380,553.94, 525,181.75 and 210,788.06 is: 290,897.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,553.94 : 525,181.75 = 210,788.06 : x
  2. Step 2: Convert to fraction form
    380,553.94/525,181.75 = 210,788.06/x
  3. Step 3: Cross multiply
    380,553.94x = 525,181.75 × 210,788.06
  4. Step 4: Simplify right side
    380,553.94x = 110,702,043,015.89
  5. Step 5: Solve for x
    x = 110,702,043,015.89/380,553.94
  6. Step 6: Final answer
    x = 290,897.12

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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.