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Finding the Fourth Proportional to 355,001.40, 488,658.96 and 309,599.28

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Solution

The fourth proportional to 355,001.40, 488,658.96 and 309,599.28 is: 426,163.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,001.40 : 488,658.96 = 309,599.28 : x
  2. Step 2: Convert to fraction form
    355,001.40/488,658.96 = 309,599.28/x
  3. Step 3: Cross multiply
    355,001.40x = 488,658.96 × 309,599.28
  4. Step 4: Simplify right side
    355,001.40x = 151,288,462,181.55
  5. Step 5: Solve for x
    x = 151,288,462,181.55/355,001.40
  6. Step 6: Final answer
    x = 426,163.00

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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.