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Finding the Fourth Proportional to 349,919.60, 525,138.60 and 256,607.60

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Solution

The fourth proportional to 349,919.60, 525,138.60 and 256,607.60 is: 385,101.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,919.60 : 525,138.60 = 256,607.60 : x
  2. Step 2: Convert to fraction form
    349,919.60/525,138.60 = 256,607.60/x
  3. Step 3: Cross multiply
    349,919.60x = 525,138.60 × 256,607.60
  4. Step 4: Simplify right side
    349,919.60x = 134,754,555,813.36
  5. Step 5: Solve for x
    x = 134,754,555,813.36/349,919.60
  6. Step 6: Final answer
    x = 385,101.48

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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.