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Finding the Fourth Proportional to 210,955.24, 316,212.54 and 126,715.24

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Solution

The fourth proportional to 210,955.24, 316,212.54 and 126,715.24 is: 189,940.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,955.24 : 316,212.54 = 126,715.24 : x
  2. Step 2: Convert to fraction form
    210,955.24/316,212.54 = 126,715.24/x
  3. Step 3: Cross multiply
    210,955.24x = 316,212.54 × 126,715.24
  4. Step 4: Simplify right side
    210,955.24x = 40,068,947,897.11
  5. Step 5: Solve for x
    x = 40,068,947,897.11/210,955.24
  6. Step 6: Final answer
    x = 189,940.52

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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.