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Finding the Fourth Proportional to 310,339.22, 428,268.63 and 176,203.22

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Solution

The fourth proportional to 310,339.22, 428,268.63 and 176,203.22 is: 243,160.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,339.22 : 428,268.63 = 176,203.22 : x
  2. Step 2: Convert to fraction form
    310,339.22/428,268.63 = 176,203.22/x
  3. Step 3: Cross multiply
    310,339.22x = 428,268.63 × 176,203.22
  4. Step 4: Simplify right side
    310,339.22x = 75,462,311,630.99
  5. Step 5: Solve for x
    x = 75,462,311,630.99/310,339.22
  6. Step 6: Final answer
    x = 243,160.73

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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.