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Finding the Fourth Proportional to 423,264.21, 634,955.88 and 123,767.31

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Solution

The fourth proportional to 423,264.21, 634,955.88 and 123,767.31 is: 185,668.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,264.21 : 634,955.88 = 123,767.31 : x
  2. Step 2: Convert to fraction form
    423,264.21/634,955.88 = 123,767.31/x
  3. Step 3: Cross multiply
    423,264.21x = 634,955.88 × 123,767.31
  4. Step 4: Simplify right side
    423,264.21x = 78,586,781,236.28
  5. Step 5: Solve for x
    x = 78,586,781,236.28/423,264.21
  6. Step 6: Final answer
    x = 185,668.38

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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.