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Finding the Fourth Proportional to 420,592.64, 580,427.80 and 229,607.48

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Solution

The fourth proportional to 420,592.64, 580,427.80 and 229,607.48 is: 316,863.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,592.64 : 580,427.80 = 229,607.48 : x
  2. Step 2: Convert to fraction form
    420,592.64/580,427.80 = 229,607.48/x
  3. Step 3: Cross multiply
    420,592.64x = 580,427.80 × 229,607.48
  4. Step 4: Simplify right side
    420,592.64x = 133,270,564,479.94
  5. Step 5: Solve for x
    x = 133,270,564,479.94/420,592.64
  6. Step 6: Final answer
    x = 316,863.76

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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.