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Finding the Fourth Proportional to 261,598.50, 392,401.53 and 74,610

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Solution

The fourth proportional to 261,598.50, 392,401.53 and 74,610 is: 111,916.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,598.50 : 392,401.53 = 74,610 : x
  2. Step 2: Convert to fraction form
    261,598.50/392,401.53 = 74,610/x
  3. Step 3: Cross multiply
    261,598.50x = 392,401.53 × 74,610
  4. Step 4: Simplify right side
    261,598.50x = 29,277,078,153.30
  5. Step 5: Solve for x
    x = 29,277,078,153.30/261,598.50
  6. Step 6: Final answer
    x = 111,916.08

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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.