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Finding the Fourth Proportional to 361,043.28, 498,370.59 and 210,140.28

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Solution

The fourth proportional to 361,043.28, 498,370.59 and 210,140.28 is: 290,069.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,043.28 : 498,370.59 = 210,140.28 : x
  2. Step 2: Convert to fraction form
    361,043.28/498,370.59 = 210,140.28/x
  3. Step 3: Cross multiply
    361,043.28x = 498,370.59 × 210,140.28
  4. Step 4: Simplify right side
    361,043.28x = 104,727,735,326.37
  5. Step 5: Solve for x
    x = 104,727,735,326.37/361,043.28
  6. Step 6: Final answer
    x = 290,069.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.