Home / 210,348.55-290,287.56-129,779.47

Finding the Fourth Proportional to 210,348.55, 290,287.56 and 129,779.47

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Solution

The fourth proportional to 210,348.55, 290,287.56 and 129,779.47 is: 179,099.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,348.55 : 290,287.56 = 129,779.47 : x
  2. Step 2: Convert to fraction form
    210,348.55/290,287.56 = 129,779.47/x
  3. Step 3: Cross multiply
    210,348.55x = 290,287.56 × 129,779.47
  4. Step 4: Simplify right side
    210,348.55x = 37,673,365,684.39
  5. Step 5: Solve for x
    x = 37,673,365,684.39/210,348.55
  6. Step 6: Final answer
    x = 179,099.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.