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Finding the Fourth Proportional to 210,309.71, 313,855.00 and 187,871.09

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Solution

The fourth proportional to 210,309.71, 313,855.00 and 187,871.09 is: 280,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,309.71 : 313,855.00 = 187,871.09 : x
  2. Step 2: Convert to fraction form
    210,309.71/313,855.00 = 187,871.09/x
  3. Step 3: Cross multiply
    210,309.71x = 313,855.00 × 187,871.09
  4. Step 4: Simplify right side
    210,309.71x = 58,964,278,913.00
  5. Step 5: Solve for x
    x = 58,964,278,913.00/210,309.71
  6. Step 6: Final answer
    x = 280,368.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.