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Finding the Fourth Proportional to 423,265.71, 634,958.13 and 123,768.82

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Solution

The fourth proportional to 423,265.71, 634,958.13 and 123,768.82 is: 185,670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,265.71 : 634,958.13 = 123,768.82 : x
  2. Step 2: Convert to fraction form
    423,265.71/634,958.13 = 123,768.82/x
  3. Step 3: Cross multiply
    423,265.71x = 634,958.13 × 123,768.82
  4. Step 4: Simplify right side
    423,265.71x = 78,588,018,499.51
  5. Step 5: Solve for x
    x = 78,588,018,499.51/423,265.71
  6. Step 6: Final answer
    x = 185,670.65

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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.