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Finding the Fourth Proportional to 255,034.60, 382,551.90 and 210,711.40

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Solution

The fourth proportional to 255,034.60, 382,551.90 and 210,711.40 is: 316,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,034.60 : 382,551.90 = 210,711.40 : x
  2. Step 2: Convert to fraction form
    255,034.60/382,551.90 = 210,711.40/x
  3. Step 3: Cross multiply
    255,034.60x = 382,551.90 × 210,711.40
  4. Step 4: Simplify right side
    255,034.60x = 80,608,046,421.66
  5. Step 5: Solve for x
    x = 80,608,046,421.66/255,034.60
  6. Step 6: Final answer
    x = 316,067.10

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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.