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Finding the Fourth Proportional to 525,326, 787,989 and 131,342

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Solution

The fourth proportional to 525,326, 787,989 and 131,342 is: 197,013

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,326 : 787,989 = 131,342 : x
  2. Step 2: Convert to fraction form
    525,326/787,989 = 131,342/x
  3. Step 3: Cross multiply
    525,326x = 787,989 × 131,342
  4. Step 4: Simplify right side
    525,326x = 103,496,051,238
  5. Step 5: Solve for x
    x = 103,496,051,238/525,326
  6. Step 6: Final answer
    x = 197,013

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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.