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Finding the Fourth Proportional to 239,138.82, 358,767.18 and 70,658.28

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Solution

The fourth proportional to 239,138.82, 358,767.18 and 70,658.28 is: 106,004.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,138.82 : 358,767.18 = 70,658.28 : x
  2. Step 2: Convert to fraction form
    239,138.82/358,767.18 = 70,658.28/x
  3. Step 3: Cross multiply
    239,138.82x = 358,767.18 × 70,658.28
  4. Step 4: Simplify right side
    239,138.82x = 25,349,871,859.25
  5. Step 5: Solve for x
    x = 25,349,871,859.25/239,138.82
  6. Step 6: Final answer
    x = 106,004.84

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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.