Home / 210,437.60-290,508.66-129,909.54

Finding the Fourth Proportional to 210,437.60, 290,508.66 and 129,909.54

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Solution

The fourth proportional to 210,437.60, 290,508.66 and 129,909.54 is: 179,339.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,437.60 : 290,508.66 = 129,909.54 : x
  2. Step 2: Convert to fraction form
    210,437.60/290,508.66 = 129,909.54/x
  3. Step 3: Cross multiply
    210,437.60x = 290,508.66 × 129,909.54
  4. Step 4: Simplify right side
    210,437.60x = 37,739,846,386.62
  5. Step 5: Solve for x
    x = 37,739,846,386.62/210,437.60
  6. Step 6: Final answer
    x = 179,339.84

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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.