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Finding the Fourth Proportional to 608,135.40, 911,897.10 and 187,356.60

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Solution

The fourth proportional to 608,135.40, 911,897.10 and 187,356.60 is: 280,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,135.40 : 911,897.10 = 187,356.60 : x
  2. Step 2: Convert to fraction form
    608,135.40/911,897.10 = 187,356.60/x
  3. Step 3: Cross multiply
    608,135.40x = 911,897.10 × 187,356.60
  4. Step 4: Simplify right side
    608,135.40x = 170,849,940,205.86
  5. Step 5: Solve for x
    x = 170,849,940,205.86/608,135.40
  6. Step 6: Final answer
    x = 280,940.63

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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.