Home / 320,276.85-480,564.72-142,765.35

Finding the Fourth Proportional to 320,276.85, 480,564.72 and 142,765.35

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Solution

The fourth proportional to 320,276.85, 480,564.72 and 142,765.35 is: 214,214.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,276.85 : 480,564.72 = 142,765.35 : x
  2. Step 2: Convert to fraction form
    320,276.85/480,564.72 = 142,765.35/x
  3. Step 3: Cross multiply
    320,276.85x = 480,564.72 × 142,765.35
  4. Step 4: Simplify right side
    320,276.85x = 68,607,990,448.45
  5. Step 5: Solve for x
    x = 68,607,990,448.45/320,276.85
  6. Step 6: Final answer
    x = 214,214.64

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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.