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Finding the Fourth Proportional to 320,025.48, 480,036.48 and 130,485.11

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Solution

The fourth proportional to 320,025.48, 480,036.48 and 130,485.11 is: 195,726.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,025.48 : 480,036.48 = 130,485.11 : x
  2. Step 2: Convert to fraction form
    320,025.48/480,036.48 = 130,485.11/x
  3. Step 3: Cross multiply
    320,025.48x = 480,036.48 × 130,485.11
  4. Step 4: Simplify right side
    320,025.48x = 62,637,612,896.81
  5. Step 5: Solve for x
    x = 62,637,612,896.81/320,025.48
  6. Step 6: Final answer
    x = 195,726.96

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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.