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Finding the Fourth Proportional to 379,521.72, 569,376 and 267,420.87

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Solution

The fourth proportional to 379,521.72, 569,376 and 267,420.87 is: 401,197.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,521.72 : 569,376 = 267,420.87 : x
  2. Step 2: Convert to fraction form
    379,521.72/569,376 = 267,420.87/x
  3. Step 3: Cross multiply
    379,521.72x = 569,376 × 267,420.87
  4. Step 4: Simplify right side
    379,521.72x = 152,263,025,277.12
  5. Step 5: Solve for x
    x = 152,263,025,277.12/379,521.72
  6. Step 6: Final answer
    x = 401,197.13

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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.