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Finding the Fourth Proportional to 347,908, 521,862 and 85,252

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Solution

The fourth proportional to 347,908, 521,862 and 85,252 is: 127,878

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,908 : 521,862 = 85,252 : x
  2. Step 2: Convert to fraction form
    347,908/521,862 = 85,252/x
  3. Step 3: Cross multiply
    347,908x = 521,862 × 85,252
  4. Step 4: Simplify right side
    347,908x = 44,489,779,224
  5. Step 5: Solve for x
    x = 44,489,779,224/347,908
  6. Step 6: Final answer
    x = 127,878

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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.