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Finding the Fourth Proportional to 245,538.70, 368,308.05 and 127,246.30

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Solution

The fourth proportional to 245,538.70, 368,308.05 and 127,246.30 is: 190,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,538.70 : 368,308.05 = 127,246.30 : x
  2. Step 2: Convert to fraction form
    245,538.70/368,308.05 = 127,246.30/x
  3. Step 3: Cross multiply
    245,538.70x = 368,308.05 × 127,246.30
  4. Step 4: Simplify right side
    245,538.70x = 46,865,836,622.72
  5. Step 5: Solve for x
    x = 46,865,836,622.72/245,538.70
  6. Step 6: Final answer
    x = 190,869.45

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Similar ratio
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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.