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Finding the Fourth Proportional to 318,546.77, 439,585.67 and 180,750.78

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Solution

The fourth proportional to 318,546.77, 439,585.67 and 180,750.78 is: 249,431.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,546.77 : 439,585.67 = 180,750.78 : x
  2. Step 2: Convert to fraction form
    318,546.77/439,585.67 = 180,750.78/x
  3. Step 3: Cross multiply
    318,546.77x = 439,585.67 × 180,750.78
  4. Step 4: Simplify right side
    318,546.77x = 79,455,453,181.20
  5. Step 5: Solve for x
    x = 79,455,453,181.20/318,546.77
  6. Step 6: Final answer
    x = 249,431.05

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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.