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Finding the Fourth Proportional to 437,465.80, 656,117.70 and 121,857.40

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Solution

The fourth proportional to 437,465.80, 656,117.70 and 121,857.40 is: 182,763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,465.80 : 656,117.70 = 121,857.40 : x
  2. Step 2: Convert to fraction form
    437,465.80/656,117.70 = 121,857.40/x
  3. Step 3: Cross multiply
    437,465.80x = 656,117.70 × 121,857.40
  4. Step 4: Simplify right side
    437,465.80x = 79,952,797,015.98
  5. Step 5: Solve for x
    x = 79,952,797,015.98/437,465.80
  6. Step 6: Final answer
    x = 182,763.54

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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.