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Finding the Fourth Proportional to 358,936.40, 538,404.60 and 109,618.40

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Solution

The fourth proportional to 358,936.40, 538,404.60 and 109,618.40 is: 164,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,936.40 : 538,404.60 = 109,618.40 : x
  2. Step 2: Convert to fraction form
    358,936.40/538,404.60 = 109,618.40/x
  3. Step 3: Cross multiply
    358,936.40x = 538,404.60 × 109,618.40
  4. Step 4: Simplify right side
    358,936.40x = 59,019,050,804.64
  5. Step 5: Solve for x
    x = 59,019,050,804.64/358,936.40
  6. Step 6: Final answer
    x = 164,427.60

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1.5x scale

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.