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Finding the Fourth Proportional to 380,278.56, 524,788.56 and 210,515.52

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Solution

The fourth proportional to 380,278.56, 524,788.56 and 210,515.52 is: 290,513.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,278.56 : 524,788.56 = 210,515.52 : x
  2. Step 2: Convert to fraction form
    380,278.56/524,788.56 = 210,515.52/x
  3. Step 3: Cross multiply
    380,278.56x = 524,788.56 × 210,515.52
  4. Step 4: Simplify right side
    380,278.56x = 110,476,136,598.45
  5. Step 5: Solve for x
    x = 110,476,136,598.45/380,278.56
  6. Step 6: Final answer
    x = 290,513.71

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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.