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Finding the Fourth Proportional to 420,150.04, 579,856.07 and 238,889.13

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Solution

The fourth proportional to 420,150.04, 579,856.07 and 238,889.13 is: 329,694.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,150.04 : 579,856.07 = 238,889.13 : x
  2. Step 2: Convert to fraction form
    420,150.04/579,856.07 = 238,889.13/x
  3. Step 3: Cross multiply
    420,150.04x = 579,856.07 × 238,889.13
  4. Step 4: Simplify right side
    420,150.04x = 138,521,309,188.24
  5. Step 5: Solve for x
    x = 138,521,309,188.24/420,150.04
  6. Step 6: Final answer
    x = 329,694.86

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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.