Home / 239,112.60-358,712.10-120,485.40

Finding the Fourth Proportional to 239,112.60, 358,712.10 and 120,485.40

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Solution

The fourth proportional to 239,112.60, 358,712.10 and 120,485.40 is: 180,749.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,112.60 : 358,712.10 = 120,485.40 : x
  2. Step 2: Convert to fraction form
    239,112.60/358,712.10 = 120,485.40/x
  3. Step 3: Cross multiply
    239,112.60x = 358,712.10 × 120,485.40
  4. Step 4: Simplify right side
    239,112.60x = 43,219,570,853.34
  5. Step 5: Solve for x
    x = 43,219,570,853.34/239,112.60
  6. Step 6: Final answer
    x = 180,749.87

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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.