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Finding the Fourth Proportional to 335,952, 503,928 and 138,960

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Solution

The fourth proportional to 335,952, 503,928 and 138,960 is: 208,440

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,952 : 503,928 = 138,960 : x
  2. Step 2: Convert to fraction form
    335,952/503,928 = 138,960/x
  3. Step 3: Cross multiply
    335,952x = 503,928 × 138,960
  4. Step 4: Simplify right side
    335,952x = 70,025,834,880
  5. Step 5: Solve for x
    x = 70,025,834,880/335,952
  6. Step 6: Final answer
    x = 208,440

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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.