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Finding the Fourth Proportional to 420,182.40, 579,830.40 and 229,194.24

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Solution

The fourth proportional to 420,182.40, 579,830.40 and 229,194.24 is: 316,276.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,182.40 : 579,830.40 = 229,194.24 : x
  2. Step 2: Convert to fraction form
    420,182.40/579,830.40 = 229,194.24/x
  3. Step 3: Cross multiply
    420,182.40x = 579,830.40 × 229,194.24
  4. Step 4: Simplify right side
    420,182.40x = 132,893,787,856.90
  5. Step 5: Solve for x
    x = 132,893,787,856.90/420,182.40
  6. Step 6: Final answer
    x = 316,276.43

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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.