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Finding the Fourth Proportional to 386,315.60, 579,473.40 and 329,234.90

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Solution

The fourth proportional to 386,315.60, 579,473.40 and 329,234.90 is: 493,852.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,315.60 : 579,473.40 = 329,234.90 : x
  2. Step 2: Convert to fraction form
    386,315.60/579,473.40 = 329,234.90/x
  3. Step 3: Cross multiply
    386,315.60x = 579,473.40 × 329,234.90
  4. Step 4: Simplify right side
    386,315.60x = 190,782,866,901.66
  5. Step 5: Solve for x
    x = 190,782,866,901.66/386,315.60
  6. Step 6: Final answer
    x = 493,852.35

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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.