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Finding the Fourth Proportional to 399,040, 598,672.50 and 162,552.40

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Solution

The fourth proportional to 399,040, 598,672.50 and 162,552.40 is: 243,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,040 : 598,672.50 = 162,552.40 : x
  2. Step 2: Convert to fraction form
    399,040/598,672.50 = 162,552.40/x
  3. Step 3: Cross multiply
    399,040x = 598,672.50 × 162,552.40
  4. Step 4: Simplify right side
    399,040x = 97,315,651,689
  5. Step 5: Solve for x
    x = 97,315,651,689/399,040
  6. Step 6: Final answer
    x = 243,874.43

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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.