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Finding the Fourth Proportional to 270,021.20, 404,707.80 and 112,168.40

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Solution

The fourth proportional to 270,021.20, 404,707.80 and 112,168.40 is: 168,118.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,021.20 : 404,707.80 = 112,168.40 : x
  2. Step 2: Convert to fraction form
    270,021.20/404,707.80 = 112,168.40/x
  3. Step 3: Cross multiply
    270,021.20x = 404,707.80 × 112,168.40
  4. Step 4: Simplify right side
    270,021.20x = 45,395,426,393.52
  5. Step 5: Solve for x
    x = 45,395,426,393.52/270,021.20
  6. Step 6: Final answer
    x = 168,118.01

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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.