Home / 210,531.35-315,798.40-84,182.21

Finding the Fourth Proportional to 210,531.35, 315,798.40 and 84,182.21

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Solution

The fourth proportional to 210,531.35, 315,798.40 and 84,182.21 is: 126,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,531.35 : 315,798.40 = 84,182.21 : x
  2. Step 2: Convert to fraction form
    210,531.35/315,798.40 = 84,182.21/x
  3. Step 3: Cross multiply
    210,531.35x = 315,798.40 × 84,182.21
  4. Step 4: Simplify right side
    210,531.35x = 26,584,607,351.60
  5. Step 5: Solve for x
    x = 26,584,607,351.60/210,531.35
  6. Step 6: Final answer
    x = 126,273.86

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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.