Home / 442,923.80-664,385.70-243,858.20

Finding the Fourth Proportional to 442,923.80, 664,385.70 and 243,858.20

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Solution

The fourth proportional to 442,923.80, 664,385.70 and 243,858.20 is: 365,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,923.80 : 664,385.70 = 243,858.20 : x
  2. Step 2: Convert to fraction form
    442,923.80/664,385.70 = 243,858.20/x
  3. Step 3: Cross multiply
    442,923.80x = 664,385.70 × 243,858.20
  4. Step 4: Simplify right side
    442,923.80x = 162,015,900,907.74
  5. Step 5: Solve for x
    x = 162,015,900,907.74/442,923.80
  6. Step 6: Final answer
    x = 365,787.30

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Double scale
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Similar ratio
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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.