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Finding the Fourth Proportional to 349,917.60, 525,135.60 and 256,605.60

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Solution

The fourth proportional to 349,917.60, 525,135.60 and 256,605.60 is: 385,098.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,917.60 : 525,135.60 = 256,605.60 : x
  2. Step 2: Convert to fraction form
    349,917.60/525,135.60 = 256,605.60/x
  3. Step 3: Cross multiply
    349,917.60x = 525,135.60 × 256,605.60
  4. Step 4: Simplify right side
    349,917.60x = 134,752,735,719.36
  5. Step 5: Solve for x
    x = 134,752,735,719.36/349,917.60
  6. Step 6: Final answer
    x = 385,098.48

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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.