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Finding the Fourth Proportional to 320,027.49, 480,039.48 and 130,487.10

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Solution

The fourth proportional to 320,027.49, 480,039.48 and 130,487.10 is: 195,729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,027.49 : 480,039.48 = 130,487.10 : x
  2. Step 2: Convert to fraction form
    320,027.49/480,039.48 = 130,487.10/x
  3. Step 3: Cross multiply
    320,027.49x = 480,039.48 × 130,487.10
  4. Step 4: Simplify right side
    320,027.49x = 62,638,959,630.71
  5. Step 5: Solve for x
    x = 62,638,959,630.71/320,027.49
  6. Step 6: Final answer
    x = 195,729.93

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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.