Home / 420,150.60-579,856.85-238,889.69

Finding the Fourth Proportional to 420,150.60, 579,856.85 and 238,889.69

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Solution

The fourth proportional to 420,150.60, 579,856.85 and 238,889.69 is: 329,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,150.60 : 579,856.85 = 238,889.69 : x
  2. Step 2: Convert to fraction form
    420,150.60/579,856.85 = 238,889.69/x
  3. Step 3: Cross multiply
    420,150.60x = 579,856.85 × 238,889.69
  4. Step 4: Simplify right side
    420,150.60x = 138,521,823,140.88
  5. Step 5: Solve for x
    x = 138,521,823,140.88/420,150.60
  6. Step 6: Final answer
    x = 329,695.65

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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.