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Finding the Fourth Proportional to 663,139.40, 994,708.86 and 164,503.40

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Solution

The fourth proportional to 663,139.40, 994,708.86 and 164,503.40 is: 246,755.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,139.40 : 994,708.86 = 164,503.40 : x
  2. Step 2: Convert to fraction form
    663,139.40/994,708.86 = 164,503.40/x
  3. Step 3: Cross multiply
    663,139.40x = 994,708.86 × 164,503.40
  4. Step 4: Simplify right side
    663,139.40x = 163,632,989,480.12
  5. Step 5: Solve for x
    x = 163,632,989,480.12/663,139.40
  6. Step 6: Final answer
    x = 246,755.04

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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.