Home / 320,056.77-480,214.24-142,442.30

Finding the Fourth Proportional to 320,056.77, 480,214.24 and 142,442.30

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Solution

The fourth proportional to 320,056.77, 480,214.24 and 142,442.30 is: 213,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,056.77 : 480,214.24 = 142,442.30 : x
  2. Step 2: Convert to fraction form
    320,056.77/480,214.24 = 142,442.30/x
  3. Step 3: Cross multiply
    320,056.77x = 480,214.24 × 142,442.30
  4. Step 4: Simplify right side
    320,056.77x = 68,402,818,793.39
  5. Step 5: Solve for x
    x = 68,402,818,793.39/320,056.77
  6. Step 6: Final answer
    x = 213,720.90

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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.