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Finding the Fourth Proportional to 210,959.50, 316,491.10 and 63,215.50

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Solution

The fourth proportional to 210,959.50, 316,491.10 and 63,215.50 is: 94,838.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,959.50 : 316,491.10 = 63,215.50 : x
  2. Step 2: Convert to fraction form
    210,959.50/316,491.10 = 63,215.50/x
  3. Step 3: Cross multiply
    210,959.50x = 316,491.10 × 63,215.50
  4. Step 4: Simplify right side
    210,959.50x = 20,007,143,132.05
  5. Step 5: Solve for x
    x = 20,007,143,132.05/210,959.50
  6. Step 6: Final answer
    x = 94,838.79

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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.