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Finding the Fourth Proportional to 267,420.72, 401,193.18 and 77,885.58

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Solution

The fourth proportional to 267,420.72, 401,193.18 and 77,885.58 is: 116,846.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,420.72 : 401,193.18 = 77,885.58 : x
  2. Step 2: Convert to fraction form
    267,420.72/401,193.18 = 77,885.58/x
  3. Step 3: Cross multiply
    267,420.72x = 401,193.18 × 77,885.58
  4. Step 4: Simplify right side
    267,420.72x = 31,247,163,516.34
  5. Step 5: Solve for x
    x = 31,247,163,516.34/267,420.72
  6. Step 6: Final answer
    x = 116,846.46

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1.5x scale

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.