Home / 347,389.20-521,108.10-136,999.80

Finding the Fourth Proportional to 347,389.20, 521,108.10 and 136,999.80

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Solution

The fourth proportional to 347,389.20, 521,108.10 and 136,999.80 is: 205,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,389.20 : 521,108.10 = 136,999.80 : x
  2. Step 2: Convert to fraction form
    347,389.20/521,108.10 = 136,999.80/x
  3. Step 3: Cross multiply
    347,389.20x = 521,108.10 × 136,999.80
  4. Step 4: Simplify right side
    347,389.20x = 71,391,705,478.38
  5. Step 5: Solve for x
    x = 71,391,705,478.38/347,389.20
  6. Step 6: Final answer
    x = 205,509.28

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1.5x scale

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.