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Finding the Fourth Proportional to 408,985, 613,477.56 and 187,369

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Solution

The fourth proportional to 408,985, 613,477.56 and 187,369 is: 281,053.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,985 : 613,477.56 = 187,369 : x
  2. Step 2: Convert to fraction form
    408,985/613,477.56 = 187,369/x
  3. Step 3: Cross multiply
    408,985x = 613,477.56 × 187,369
  4. Step 4: Simplify right side
    408,985x = 114,946,676,939.64
  5. Step 5: Solve for x
    x = 114,946,676,939.64/408,985
  6. Step 6: Final answer
    x = 281,053.53

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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.