Home / 318,374.45-439,316.85-215,233.10

Finding the Fourth Proportional to 318,374.45, 439,316.85 and 215,233.10

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Solution

The fourth proportional to 318,374.45, 439,316.85 and 215,233.10 is: 296,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,374.45 : 439,316.85 = 215,233.10 : x
  2. Step 2: Convert to fraction form
    318,374.45/439,316.85 = 215,233.10/x
  3. Step 3: Cross multiply
    318,374.45x = 439,316.85 × 215,233.10
  4. Step 4: Simplify right side
    318,374.45x = 94,555,525,311.15
  5. Step 5: Solve for x
    x = 94,555,525,311.15/318,374.45
  6. Step 6: Final answer
    x = 296,994.71

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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.