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Finding the Fourth Proportional to 308,990.08, 426,385.92 and 173,000.32

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Solution

The fourth proportional to 308,990.08, 426,385.92 and 173,000.32 is: 238,729.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,990.08 : 426,385.92 = 173,000.32 : x
  2. Step 2: Convert to fraction form
    308,990.08/426,385.92 = 173,000.32/x
  3. Step 3: Cross multiply
    308,990.08x = 426,385.92 × 173,000.32
  4. Step 4: Simplify right side
    308,990.08x = 73,764,900,603.49
  5. Step 5: Solve for x
    x = 73,764,900,603.49/308,990.08
  6. Step 6: Final answer
    x = 238,729.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.