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Finding the Fourth Proportional to 239,011.64, 358,739 and 120,766.10

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Solution

The fourth proportional to 239,011.64, 358,739 and 120,766.10 is: 181,261.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,011.64 : 358,739 = 120,766.10 : x
  2. Step 2: Convert to fraction form
    239,011.64/358,739 = 120,766.10/x
  3. Step 3: Cross multiply
    239,011.64x = 358,739 × 120,766.10
  4. Step 4: Simplify right side
    239,011.64x = 43,323,509,947.90
  5. Step 5: Solve for x
    x = 43,323,509,947.90/239,011.64
  6. Step 6: Final answer
    x = 181,261.09

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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.