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Finding the Fourth Proportional to 615,639.88, 923,238.42 and 260,679.52

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Solution

The fourth proportional to 615,639.88, 923,238.42 and 260,679.52 is: 390,925.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,639.88 : 923,238.42 = 260,679.52 : x
  2. Step 2: Convert to fraction form
    615,639.88/923,238.42 = 260,679.52/x
  3. Step 3: Cross multiply
    615,639.88x = 923,238.42 × 260,679.52
  4. Step 4: Simplify right side
    615,639.88x = 240,669,348,171.16
  5. Step 5: Solve for x
    x = 240,669,348,171.16/615,639.88
  6. Step 6: Final answer
    x = 390,925.53

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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.