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Finding the Fourth Proportional to 615,638.88, 923,236.92 and 260,678.52

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Solution

The fourth proportional to 615,638.88, 923,236.92 and 260,678.52 is: 390,924.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,638.88 : 923,236.92 = 260,678.52 : x
  2. Step 2: Convert to fraction form
    615,638.88/923,236.92 = 260,678.52/x
  3. Step 3: Cross multiply
    615,638.88x = 923,236.92 × 260,678.52
  4. Step 4: Simplify right side
    615,638.88x = 240,668,033,914.96
  5. Step 5: Solve for x
    x = 240,668,033,914.96/615,638.88
  6. Step 6: Final answer
    x = 390,924.03

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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.