Home / 393,311.10-542,765.37-218,878.35

Finding the Fourth Proportional to 393,311.10, 542,765.37 and 218,878.35

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Solution

The fourth proportional to 393,311.10, 542,765.37 and 218,878.35 is: 302,049.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,311.10 : 542,765.37 = 218,878.35 : x
  2. Step 2: Convert to fraction form
    393,311.10/542,765.37 = 218,878.35/x
  3. Step 3: Cross multiply
    393,311.10x = 542,765.37 × 218,878.35
  4. Step 4: Simplify right side
    393,311.10x = 118,799,587,820.48
  5. Step 5: Solve for x
    x = 118,799,587,820.48/393,311.10
  6. Step 6: Final answer
    x = 302,049.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.