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Finding the Fourth Proportional to 423,464.40, 635,002.20 and 186,685.20

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Solution

The fourth proportional to 423,464.40, 635,002.20 and 186,685.20 is: 279,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,464.40 : 635,002.20 = 186,685.20 : x
  2. Step 2: Convert to fraction form
    423,464.40/635,002.20 = 186,685.20/x
  3. Step 3: Cross multiply
    423,464.40x = 635,002.20 × 186,685.20
  4. Step 4: Simplify right side
    423,464.40x = 118,545,512,707.44
  5. Step 5: Solve for x
    x = 118,545,512,707.44/423,464.40
  6. Step 6: Final answer
    x = 279,942.10

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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.