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Finding the Fourth Proportional to 243,629.88, 365,278.51 and 129,794.71

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Solution

The fourth proportional to 243,629.88, 365,278.51 and 129,794.71 is: 194,603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,629.88 : 365,278.51 = 129,794.71 : x
  2. Step 2: Convert to fraction form
    243,629.88/365,278.51 = 129,794.71/x
  3. Step 3: Cross multiply
    243,629.88x = 365,278.51 × 129,794.71
  4. Step 4: Simplify right side
    243,629.88x = 47,411,217,037.00
  5. Step 5: Solve for x
    x = 47,411,217,037.00/243,629.88
  6. Step 6: Final answer
    x = 194,603.46

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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.