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Finding the Fourth Proportional to 351,956.16, 527,978.43 and 172,047.40

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Solution

The fourth proportional to 351,956.16, 527,978.43 and 172,047.40 is: 258,092.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,956.16 : 527,978.43 = 172,047.40 : x
  2. Step 2: Convert to fraction form
    351,956.16/527,978.43 = 172,047.40/x
  3. Step 3: Cross multiply
    351,956.16x = 527,978.43 × 172,047.40
  4. Step 4: Simplify right side
    351,956.16x = 90,837,314,817.64
  5. Step 5: Solve for x
    x = 90,837,314,817.64/351,956.16
  6. Step 6: Final answer
    x = 258,092.70

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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.