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Finding the Fourth Proportional to 295,491.20, 442,993.80 and 127,140.80

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Solution

The fourth proportional to 295,491.20, 442,993.80 and 127,140.80 is: 190,606.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,491.20 : 442,993.80 = 127,140.80 : x
  2. Step 2: Convert to fraction form
    295,491.20/442,993.80 = 127,140.80/x
  3. Step 3: Cross multiply
    295,491.20x = 442,993.80 × 127,140.80
  4. Step 4: Simplify right side
    295,491.20x = 56,322,586,127.04
  5. Step 5: Solve for x
    x = 56,322,586,127.04/295,491.20
  6. Step 6: Final answer
    x = 190,606.64

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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.