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Finding the Fourth Proportional to 268,886.77, 403,579.53 and 135,860.45

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Solution

The fourth proportional to 268,886.77, 403,579.53 and 135,860.45 is: 203,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,886.77 : 403,579.53 = 135,860.45 : x
  2. Step 2: Convert to fraction form
    268,886.77/403,579.53 = 135,860.45/x
  3. Step 3: Cross multiply
    268,886.77x = 403,579.53 × 135,860.45
  4. Step 4: Simplify right side
    268,886.77x = 54,830,494,538.69
  5. Step 5: Solve for x
    x = 54,830,494,538.69/268,886.77
  6. Step 6: Final answer
    x = 203,916.67

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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.