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Finding the Fourth Proportional to 384,745.29, 531,288.95 and 239,798.45

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Solution

The fourth proportional to 384,745.29, 531,288.95 and 239,798.45 is: 331,134.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,745.29 : 531,288.95 = 239,798.45 : x
  2. Step 2: Convert to fraction form
    384,745.29/531,288.95 = 239,798.45/x
  3. Step 3: Cross multiply
    384,745.29x = 531,288.95 × 239,798.45
  4. Step 4: Simplify right side
    384,745.29x = 127,402,268,639.85
  5. Step 5: Solve for x
    x = 127,402,268,639.85/384,745.29
  6. Step 6: Final answer
    x = 331,134.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.