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Finding the Fourth Proportional to 615,640.88, 923,239.92 and 260,680.52

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Solution

The fourth proportional to 615,640.88, 923,239.92 and 260,680.52 is: 390,927.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,640.88 : 923,239.92 = 260,680.52 : x
  2. Step 2: Convert to fraction form
    615,640.88/923,239.92 = 260,680.52/x
  3. Step 3: Cross multiply
    615,640.88x = 923,239.92 × 260,680.52
  4. Step 4: Simplify right side
    615,640.88x = 240,670,662,430.36
  5. Step 5: Solve for x
    x = 240,670,662,430.36/615,640.88
  6. Step 6: Final answer
    x = 390,927.03

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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.