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Finding the Fourth Proportional to 267,545.72, 401,285.76 and 155,287

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Solution

The fourth proportional to 267,545.72, 401,285.76 and 155,287 is: 232,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,545.72 : 401,285.76 = 155,287 : x
  2. Step 2: Convert to fraction form
    267,545.72/401,285.76 = 155,287/x
  3. Step 3: Cross multiply
    267,545.72x = 401,285.76 × 155,287
  4. Step 4: Simplify right side
    267,545.72x = 62,314,461,813.12
  5. Step 5: Solve for x
    x = 62,314,461,813.12/267,545.72
  6. Step 6: Final answer
    x = 232,911.45

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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.