Home / 318,651.17-439,743.13-173,461.40

Finding the Fourth Proportional to 318,651.17, 439,743.13 and 173,461.40

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Solution

The fourth proportional to 318,651.17, 439,743.13 and 173,461.40 is: 239,379.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,651.17 : 439,743.13 = 173,461.40 : x
  2. Step 2: Convert to fraction form
    318,651.17/439,743.13 = 173,461.40/x
  3. Step 3: Cross multiply
    318,651.17x = 439,743.13 × 173,461.40
  4. Step 4: Simplify right side
    318,651.17x = 76,278,457,986.85
  5. Step 5: Solve for x
    x = 76,278,457,986.85/318,651.17
  6. Step 6: Final answer
    x = 239,379.19

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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.