Home / 331,890.40-497,533.20-121,477.60

Finding the Fourth Proportional to 331,890.40, 497,533.20 and 121,477.60

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Solution

The fourth proportional to 331,890.40, 497,533.20 and 121,477.60 is: 182,105.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,890.40 : 497,533.20 = 121,477.60 : x
  2. Step 2: Convert to fraction form
    331,890.40/497,533.20 = 121,477.60/x
  3. Step 3: Cross multiply
    331,890.40x = 497,533.20 × 121,477.60
  4. Step 4: Simplify right side
    331,890.40x = 60,439,139,056.32
  5. Step 5: Solve for x
    x = 60,439,139,056.32/331,890.40
  6. Step 6: Final answer
    x = 182,105.72

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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.