Home / 318,026.50-438,613.68-215,884.06

Finding the Fourth Proportional to 318,026.50, 438,613.68 and 215,884.06

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Solution

The fourth proportional to 318,026.50, 438,613.68 and 215,884.06 is: 297,741.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,026.50 : 438,613.68 = 215,884.06 : x
  2. Step 2: Convert to fraction form
    318,026.50/438,613.68 = 215,884.06/x
  3. Step 3: Cross multiply
    318,026.50x = 438,613.68 × 215,884.06
  4. Step 4: Simplify right side
    318,026.50x = 94,689,702,009.94
  5. Step 5: Solve for x
    x = 94,689,702,009.94/318,026.50
  6. Step 6: Final answer
    x = 297,741.55

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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.