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Finding the Fourth Proportional to 320,386.32, 480,579.48 and 120,751.52

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Solution

The fourth proportional to 320,386.32, 480,579.48 and 120,751.52 is: 181,127.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,386.32 : 480,579.48 = 120,751.52 : x
  2. Step 2: Convert to fraction form
    320,386.32/480,579.48 = 120,751.52/x
  3. Step 3: Cross multiply
    320,386.32x = 480,579.48 × 120,751.52
  4. Step 4: Simplify right side
    320,386.32x = 58,030,700,287.91
  5. Step 5: Solve for x
    x = 58,030,700,287.91/320,386.32
  6. Step 6: Final answer
    x = 181,127.27

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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.