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Finding the Fourth Proportional to 318,457.96, 439,668.34 and 219,173.63

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Solution

The fourth proportional to 318,457.96, 439,668.34 and 219,173.63 is: 302,594.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,457.96 : 439,668.34 = 219,173.63 : x
  2. Step 2: Convert to fraction form
    318,457.96/439,668.34 = 219,173.63/x
  3. Step 3: Cross multiply
    318,457.96x = 439,668.34 × 219,173.63
  4. Step 4: Simplify right side
    318,457.96x = 96,363,703,327.60
  5. Step 5: Solve for x
    x = 96,363,703,327.60/318,457.96
  6. Step 6: Final answer
    x = 302,594.74

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1.5x scale

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.