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Finding the Fourth Proportional to 615,331.85, 923,106.11 and 210,428.84

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Solution

The fourth proportional to 615,331.85, 923,106.11 and 210,428.84 is: 315,680.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,331.85 : 923,106.11 = 210,428.84 : x
  2. Step 2: Convert to fraction form
    615,331.85/923,106.11 = 210,428.84/x
  3. Step 3: Cross multiply
    615,331.85x = 923,106.11 × 210,428.84
  4. Step 4: Simplify right side
    615,331.85x = 194,248,149,179.83
  5. Step 5: Solve for x
    x = 194,248,149,179.83/615,331.85
  6. Step 6: Final answer
    x = 315,680.31

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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.