Home / 210,299.32-290,317.11-129,771.19

Finding the Fourth Proportional to 210,299.32, 290,317.11 and 129,771.19

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Solution

The fourth proportional to 210,299.32, 290,317.11 and 129,771.19 is: 179,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,299.32 : 290,317.11 = 129,771.19 : x
  2. Step 2: Convert to fraction form
    210,299.32/290,317.11 = 129,771.19/x
  3. Step 3: Cross multiply
    210,299.32x = 290,317.11 × 129,771.19
  4. Step 4: Simplify right side
    210,299.32x = 37,674,795,390.48
  5. Step 5: Solve for x
    x = 37,674,795,390.48/210,299.32
  6. Step 6: Final answer
    x = 179,148.45

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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.