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Finding the Fourth Proportional to 318,791.16, 439,820.50 and 180,953.67

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Solution

The fourth proportional to 318,791.16, 439,820.50 and 180,953.67 is: 249,652.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,791.16 : 439,820.50 = 180,953.67 : x
  2. Step 2: Convert to fraction form
    318,791.16/439,820.50 = 180,953.67/x
  3. Step 3: Cross multiply
    318,791.16x = 439,820.50 × 180,953.67
  4. Step 4: Simplify right side
    318,791.16x = 79,587,133,616.24
  5. Step 5: Solve for x
    x = 79,587,133,616.24/318,791.16
  6. Step 6: Final answer
    x = 249,652.89

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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.