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Finding the Fourth Proportional to 305,329.60, 457,994.40 and 210,851.20

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Solution

The fourth proportional to 305,329.60, 457,994.40 and 210,851.20 is: 316,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,329.60 : 457,994.40 = 210,851.20 : x
  2. Step 2: Convert to fraction form
    305,329.60/457,994.40 = 210,851.20/x
  3. Step 3: Cross multiply
    305,329.60x = 457,994.40 × 210,851.20
  4. Step 4: Simplify right side
    305,329.60x = 96,568,668,833.28
  5. Step 5: Solve for x
    x = 96,568,668,833.28/305,329.60
  6. Step 6: Final answer
    x = 316,276.80

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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.