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Finding the Fourth Proportional to 261,798, 392,697 and 64,806

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Solution

The fourth proportional to 261,798, 392,697 and 64,806 is: 97,209

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,798 : 392,697 = 64,806 : x
  2. Step 2: Convert to fraction form
    261,798/392,697 = 64,806/x
  3. Step 3: Cross multiply
    261,798x = 392,697 × 64,806
  4. Step 4: Simplify right side
    261,798x = 25,449,121,782
  5. Step 5: Solve for x
    x = 25,449,121,782/261,798
  6. Step 6: Final answer
    x = 97,209

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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.