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Finding the Fourth Proportional to 399,237.48, 595,800.78 and 356,639.16

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Solution

The fourth proportional to 399,237.48, 595,800.78 and 356,639.16 is: 532,229.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,237.48 : 595,800.78 = 356,639.16 : x
  2. Step 2: Convert to fraction form
    399,237.48/595,800.78 = 356,639.16/x
  3. Step 3: Cross multiply
    399,237.48x = 595,800.78 × 356,639.16
  4. Step 4: Simplify right side
    399,237.48x = 212,485,889,706.55
  5. Step 5: Solve for x
    x = 212,485,889,706.55/399,237.48
  6. Step 6: Final answer
    x = 532,229.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.