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Finding the Fourth Proportional to 210,660.60, 316,034.10 and 70,519.80

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Solution

The fourth proportional to 210,660.60, 316,034.10 and 70,519.80 is: 105,794.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,660.60 : 316,034.10 = 70,519.80 : x
  2. Step 2: Convert to fraction form
    210,660.60/316,034.10 = 70,519.80/x
  3. Step 3: Cross multiply
    210,660.60x = 316,034.10 × 70,519.80
  4. Step 4: Simplify right side
    210,660.60x = 22,286,661,525.18
  5. Step 5: Solve for x
    x = 22,286,661,525.18/210,660.60
  6. Step 6: Final answer
    x = 105,794.16

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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.