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Finding the Fourth Proportional to 316,628.58, 475,047.97 and 103,403.45

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Solution

The fourth proportional to 316,628.58, 475,047.97 and 103,403.45 is: 155,139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,628.58 : 475,047.97 = 103,403.45 : x
  2. Step 2: Convert to fraction form
    316,628.58/475,047.97 = 103,403.45/x
  3. Step 3: Cross multiply
    316,628.58x = 475,047.97 × 103,403.45
  4. Step 4: Simplify right side
    316,628.58x = 49,121,597,967.30
  5. Step 5: Solve for x
    x = 49,121,597,967.30/316,628.58
  6. Step 6: Final answer
    x = 155,139.49

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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.