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Finding the Fourth Proportional to 210,885.49, 316,328.22 and 105,679.84

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Solution

The fourth proportional to 210,885.49, 316,328.22 and 105,679.84 is: 158,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,885.49 : 316,328.22 = 105,679.84 : x
  2. Step 2: Convert to fraction form
    210,885.49/316,328.22 = 105,679.84/x
  3. Step 3: Cross multiply
    210,885.49x = 316,328.22 × 105,679.84
  4. Step 4: Simplify right side
    210,885.49x = 33,429,515,677.08
  5. Step 5: Solve for x
    x = 33,429,515,677.08/210,885.49
  6. Step 6: Final answer
    x = 158,519.75

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1.5x scale

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.