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Finding the Fourth Proportional to 358,860.48, 538,305.60 and 134,198.40

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Solution

The fourth proportional to 358,860.48, 538,305.60 and 134,198.40 is: 201,303.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,860.48 : 538,305.60 = 134,198.40 : x
  2. Step 2: Convert to fraction form
    358,860.48/538,305.60 = 134,198.40/x
  3. Step 3: Cross multiply
    358,860.48x = 538,305.60 × 134,198.40
  4. Step 4: Simplify right side
    358,860.48x = 72,239,750,231.04
  5. Step 5: Solve for x
    x = 72,239,750,231.04/358,860.48
  6. Step 6: Final answer
    x = 201,303.16

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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.