Home / 386,254.40-577,999.20-353,076.80

Finding the Fourth Proportional to 386,254.40, 577,999.20 and 353,076.80

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Solution

The fourth proportional to 386,254.40, 577,999.20 and 353,076.80 is: 528,351.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,254.40 : 577,999.20 = 353,076.80 : x
  2. Step 2: Convert to fraction form
    386,254.40/577,999.20 = 353,076.80/x
  3. Step 3: Cross multiply
    386,254.40x = 577,999.20 × 353,076.80
  4. Step 4: Simplify right side
    386,254.40x = 204,078,107,938.56
  5. Step 5: Solve for x
    x = 204,078,107,938.56/386,254.40
  6. Step 6: Final answer
    x = 528,351.54

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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.