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Finding the Fourth Proportional to 399,230.70, 599,283.45 and 249,639.90

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Solution

The fourth proportional to 399,230.70, 599,283.45 and 249,639.90 is: 374,733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,230.70 : 599,283.45 = 249,639.90 : x
  2. Step 2: Convert to fraction form
    399,230.70/599,283.45 = 249,639.90/x
  3. Step 3: Cross multiply
    399,230.70x = 599,283.45 × 249,639.90
  4. Step 4: Simplify right side
    399,230.70x = 149,605,060,529.66
  5. Step 5: Solve for x
    x = 149,605,060,529.66/399,230.70
  6. Step 6: Final answer
    x = 374,733.36

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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.