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Finding the Fourth Proportional to 423,257.80, 634,886.70 and 329,833.48

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Solution

The fourth proportional to 423,257.80, 634,886.70 and 329,833.48 is: 494,750.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,257.80 : 634,886.70 = 329,833.48 : x
  2. Step 2: Convert to fraction form
    423,257.80/634,886.70 = 329,833.48/x
  3. Step 3: Cross multiply
    423,257.80x = 634,886.70 × 329,833.48
  4. Step 4: Simplify right side
    423,257.80x = 209,406,889,666.72
  5. Step 5: Solve for x
    x = 209,406,889,666.72/423,257.80
  6. Step 6: Final answer
    x = 494,750.22

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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.