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Finding the Fourth Proportional to 423,179.71, 634,878.91 and 157,016.14

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Solution

The fourth proportional to 423,179.71, 634,878.91 and 157,016.14 is: 235,564.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,179.71 : 634,878.91 = 157,016.14 : x
  2. Step 2: Convert to fraction form
    423,179.71/634,878.91 = 157,016.14/x
  3. Step 3: Cross multiply
    423,179.71x = 634,878.91 × 157,016.14
  4. Step 4: Simplify right side
    423,179.71x = 99,686,234,424.68
  5. Step 5: Solve for x
    x = 99,686,234,424.68/423,179.71
  6. Step 6: Final answer
    x = 235,564.78

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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.