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Finding the Fourth Proportional to 310,339.34, 428,268.57 and 176,203.34

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Solution

The fourth proportional to 310,339.34, 428,268.57 and 176,203.34 is: 243,160.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,339.34 : 428,268.57 = 176,203.34 : x
  2. Step 2: Convert to fraction form
    310,339.34/428,268.57 = 176,203.34/x
  3. Step 3: Cross multiply
    310,339.34x = 428,268.57 × 176,203.34
  4. Step 4: Simplify right side
    310,339.34x = 75,462,352,451.02
  5. Step 5: Solve for x
    x = 75,462,352,451.02/310,339.34
  6. Step 6: Final answer
    x = 243,160.77

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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.