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Finding the Fourth Proportional to 349,846.60, 524,808.06 and 128,230.60

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Solution

The fourth proportional to 349,846.60, 524,808.06 and 128,230.60 is: 192,359.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,846.60 : 524,808.06 = 128,230.60 : x
  2. Step 2: Convert to fraction form
    349,846.60/524,808.06 = 128,230.60/x
  3. Step 3: Cross multiply
    349,846.60x = 524,808.06 × 128,230.60
  4. Step 4: Simplify right side
    349,846.60x = 67,296,452,418.64
  5. Step 5: Solve for x
    x = 67,296,452,418.64/349,846.60
  6. Step 6: Final answer
    x = 192,359.89

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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.