Home / 347,719.40-521,579.10-331,389.80

Finding the Fourth Proportional to 347,719.40, 521,579.10 and 331,389.80

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Solution

The fourth proportional to 347,719.40, 521,579.10 and 331,389.80 is: 497,084.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,719.40 : 521,579.10 = 331,389.80 : x
  2. Step 2: Convert to fraction form
    347,719.40/521,579.10 = 331,389.80/x
  3. Step 3: Cross multiply
    347,719.40x = 521,579.10 × 331,389.80
  4. Step 4: Simplify right side
    347,719.40x = 172,845,993,633.18
  5. Step 5: Solve for x
    x = 172,845,993,633.18/347,719.40
  6. Step 6: Final answer
    x = 497,084.70

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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.