Home / 210,347.55-290,286.18-129,778.47

Finding the Fourth Proportional to 210,347.55, 290,286.18 and 129,778.47

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Solution

The fourth proportional to 210,347.55, 290,286.18 and 129,778.47 is: 179,098.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,347.55 : 290,286.18 = 129,778.47 : x
  2. Step 2: Convert to fraction form
    210,347.55/290,286.18 = 129,778.47/x
  3. Step 3: Cross multiply
    210,347.55x = 290,286.18 × 129,778.47
  4. Step 4: Simplify right side
    210,347.55x = 37,672,896,302.54
  5. Step 5: Solve for x
    x = 37,672,896,302.54/210,347.55
  6. Step 6: Final answer
    x = 179,098.34

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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.