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Finding the Fourth Proportional to 304,411.20, 456,616.80 and 215,764.80

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Solution

The fourth proportional to 304,411.20, 456,616.80 and 215,764.80 is: 323,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,411.20 : 456,616.80 = 215,764.80 : x
  2. Step 2: Convert to fraction form
    304,411.20/456,616.80 = 215,764.80/x
  3. Step 3: Cross multiply
    304,411.20x = 456,616.80 × 215,764.80
  4. Step 4: Simplify right side
    304,411.20x = 98,521,832,528.64
  5. Step 5: Solve for x
    x = 98,521,832,528.64/304,411.20
  6. Step 6: Final answer
    x = 323,647.20

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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.