Home / 216,579.40-298,971.70-131,723.72

Finding the Fourth Proportional to 216,579.40, 298,971.70 and 131,723.72

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Solution

The fourth proportional to 216,579.40, 298,971.70 and 131,723.72 is: 181,834.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,579.40 : 298,971.70 = 131,723.72 : x
  2. Step 2: Convert to fraction form
    216,579.40/298,971.70 = 131,723.72/x
  3. Step 3: Cross multiply
    216,579.40x = 298,971.70 × 131,723.72
  4. Step 4: Simplify right side
    216,579.40x = 39,381,664,498.72
  5. Step 5: Solve for x
    x = 39,381,664,498.72/216,579.40
  6. Step 6: Final answer
    x = 181,834.77

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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.