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Finding the Fourth Proportional to 418,068.70, 627,103.05 and 353,114.80

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Solution

The fourth proportional to 418,068.70, 627,103.05 and 353,114.80 is: 529,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,068.70 : 627,103.05 = 353,114.80 : x
  2. Step 2: Convert to fraction form
    418,068.70/627,103.05 = 353,114.80/x
  3. Step 3: Cross multiply
    418,068.70x = 627,103.05 × 353,114.80
  4. Step 4: Simplify right side
    418,068.70x = 221,439,368,080.14
  5. Step 5: Solve for x
    x = 221,439,368,080.14/418,068.70
  6. Step 6: Final answer
    x = 529,672.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.