Home / 347,721.40-521,582.10-331,391.80

Finding the Fourth Proportional to 347,721.40, 521,582.10 and 331,391.80

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Solution

The fourth proportional to 347,721.40, 521,582.10 and 331,391.80 is: 497,087.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,721.40 : 521,582.10 = 331,391.80 : x
  2. Step 2: Convert to fraction form
    347,721.40/521,582.10 = 331,391.80/x
  3. Step 3: Cross multiply
    347,721.40x = 521,582.10 × 331,391.80
  4. Step 4: Simplify right side
    347,721.40x = 172,848,030,966.78
  5. Step 5: Solve for x
    x = 172,848,030,966.78/347,721.40
  6. Step 6: Final answer
    x = 497,087.70

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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.