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Finding the Fourth Proportional to 310,329.84, 428,255.46 and 176,193.84

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Solution

The fourth proportional to 310,329.84, 428,255.46 and 176,193.84 is: 243,147.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,329.84 : 428,255.46 = 176,193.84 : x
  2. Step 2: Convert to fraction form
    310,329.84/428,255.46 = 176,193.84/x
  3. Step 3: Cross multiply
    310,329.84x = 428,255.46 × 176,193.84
  4. Step 4: Simplify right side
    310,329.84x = 75,455,973,998.37
  5. Step 5: Solve for x
    x = 75,455,973,998.37/310,329.84
  6. Step 6: Final answer
    x = 243,147.66

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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.