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Finding the Fourth Proportional to 286,359.80, 428,664.90 and 223,374.20

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Solution

The fourth proportional to 286,359.80, 428,664.90 and 223,374.20 is: 334,378.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,359.80 : 428,664.90 = 223,374.20 : x
  2. Step 2: Convert to fraction form
    286,359.80/428,664.90 = 223,374.20/x
  3. Step 3: Cross multiply
    286,359.80x = 428,664.90 × 223,374.20
  4. Step 4: Simplify right side
    286,359.80x = 95,752,679,105.58
  5. Step 5: Solve for x
    x = 95,752,679,105.58/286,359.80
  6. Step 6: Final answer
    x = 334,378.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.