Home / 210,568.14-315,885.02-126,308.50

Finding the Fourth Proportional to 210,568.14, 315,885.02 and 126,308.50

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Solution

The fourth proportional to 210,568.14, 315,885.02 and 126,308.50 is: 189,482.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,568.14 : 315,885.02 = 126,308.50 : x
  2. Step 2: Convert to fraction form
    210,568.14/315,885.02 = 126,308.50/x
  3. Step 3: Cross multiply
    210,568.14x = 315,885.02 × 126,308.50
  4. Step 4: Simplify right side
    210,568.14x = 39,898,962,811.98
  5. Step 5: Solve for x
    x = 39,898,962,811.98/210,568.14
  6. Step 6: Final answer
    x = 189,482.43

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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.