Home / 215,782.29-297,814.65-129,828.15

Finding the Fourth Proportional to 215,782.29, 297,814.65 and 129,828.15

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Solution

The fourth proportional to 215,782.29, 297,814.65 and 129,828.15 is: 179,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,782.29 : 297,814.65 = 129,828.15 : x
  2. Step 2: Convert to fraction form
    215,782.29/297,814.65 = 129,828.15/x
  3. Step 3: Cross multiply
    215,782.29x = 297,814.65 × 129,828.15
  4. Step 4: Simplify right side
    215,782.29x = 38,664,724,403.26
  5. Step 5: Solve for x
    x = 38,664,724,403.26/215,782.29
  6. Step 6: Final answer
    x = 179,183.96

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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.