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Finding the Fourth Proportional to 472,628.43, 708,939 and 117,640.08

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Solution

The fourth proportional to 472,628.43, 708,939 and 117,640.08 is: 176,459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,628.43 : 708,939 = 117,640.08 : x
  2. Step 2: Convert to fraction form
    472,628.43/708,939 = 117,640.08/x
  3. Step 3: Cross multiply
    472,628.43x = 708,939 × 117,640.08
  4. Step 4: Simplify right side
    472,628.43x = 83,399,640,675.12
  5. Step 5: Solve for x
    x = 83,399,640,675.12/472,628.43
  6. Step 6: Final answer
    x = 176,459.21

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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.