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Finding the Fourth Proportional to 349,675.52, 524,198.40 and 128,007.68

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Solution

The fourth proportional to 349,675.52, 524,198.40 and 128,007.68 is: 191,896.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,675.52 : 524,198.40 = 128,007.68 : x
  2. Step 2: Convert to fraction form
    349,675.52/524,198.40 = 128,007.68/x
  3. Step 3: Cross multiply
    349,675.52x = 524,198.40 × 128,007.68
  4. Step 4: Simplify right side
    349,675.52x = 67,101,421,043.71
  5. Step 5: Solve for x
    x = 67,101,421,043.71/349,675.52
  6. Step 6: Final answer
    x = 191,896.25

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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.