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Finding the Fourth Proportional to 384,010.40, 576,015.60 and 321,802.40

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Solution

The fourth proportional to 384,010.40, 576,015.60 and 321,802.40 is: 482,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,010.40 : 576,015.60 = 321,802.40 : x
  2. Step 2: Convert to fraction form
    384,010.40/576,015.60 = 321,802.40/x
  3. Step 3: Cross multiply
    384,010.40x = 576,015.60 × 321,802.40
  4. Step 4: Simplify right side
    384,010.40x = 185,363,202,517.44
  5. Step 5: Solve for x
    x = 185,363,202,517.44/384,010.40
  6. Step 6: Final answer
    x = 482,703.60

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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.