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Finding the Fourth Proportional to 475,080.66, 655,676.54 and 291,286.72

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Solution

The fourth proportional to 475,080.66, 655,676.54 and 291,286.72 is: 402,015.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,080.66 : 655,676.54 = 291,286.72 : x
  2. Step 2: Convert to fraction form
    475,080.66/655,676.54 = 291,286.72/x
  3. Step 3: Cross multiply
    475,080.66x = 655,676.54 × 291,286.72
  4. Step 4: Simplify right side
    475,080.66x = 190,989,866,350.14
  5. Step 5: Solve for x
    x = 190,989,866,350.14/475,080.66
  6. Step 6: Final answer
    x = 402,015.66

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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.