Home / 306,826.24-423,415.20-172,690.24

Finding the Fourth Proportional to 306,826.24, 423,415.20 and 172,690.24

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Solution

The fourth proportional to 306,826.24, 423,415.20 and 172,690.24 is: 238,309.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,826.24 : 423,415.20 = 172,690.24 : x
  2. Step 2: Convert to fraction form
    306,826.24/423,415.20 = 172,690.24/x
  3. Step 3: Cross multiply
    306,826.24x = 423,415.20 × 172,690.24
  4. Step 4: Simplify right side
    306,826.24x = 73,119,672,507.65
  5. Step 5: Solve for x
    x = 73,119,672,507.65/306,826.24
  6. Step 6: Final answer
    x = 238,309.71

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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.