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Finding the Fourth Proportional to 210,770.69, 316,135.51 and 115,969.70

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Solution

The fourth proportional to 210,770.69, 316,135.51 and 115,969.70 is: 173,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,770.69 : 316,135.51 = 115,969.70 : x
  2. Step 2: Convert to fraction form
    210,770.69/316,135.51 = 115,969.70/x
  3. Step 3: Cross multiply
    210,770.69x = 316,135.51 × 115,969.70
  4. Step 4: Simplify right side
    210,770.69x = 36,662,140,754.46
  5. Step 5: Solve for x
    x = 36,662,140,754.46/210,770.69
  6. Step 6: Final answer
    x = 173,943.26

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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.