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Finding the Fourth Proportional to 615,223.23, 922,978.37 and 210,418.58

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Solution

The fourth proportional to 615,223.23, 922,978.37 and 210,418.58 is: 315,676.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,223.23 : 922,978.37 = 210,418.58 : x
  2. Step 2: Convert to fraction form
    615,223.23/922,978.37 = 210,418.58/x
  3. Step 3: Cross multiply
    615,223.23x = 922,978.37 × 210,418.58
  4. Step 4: Simplify right side
    615,223.23x = 194,211,793,371.22
  5. Step 5: Solve for x
    x = 194,211,793,371.22/615,223.23
  6. Step 6: Final answer
    x = 315,676.95

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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.