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Finding the Fourth Proportional to 320,397.48, 480,669.12 and 170,558.82

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Solution

The fourth proportional to 320,397.48, 480,669.12 and 170,558.82 is: 255,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,397.48 : 480,669.12 = 170,558.82 : x
  2. Step 2: Convert to fraction form
    320,397.48/480,669.12 = 170,558.82/x
  3. Step 3: Cross multiply
    320,397.48x = 480,669.12 × 170,558.82
  4. Step 4: Simplify right side
    320,397.48x = 81,982,357,917.64
  5. Step 5: Solve for x
    x = 81,982,357,917.64/320,397.48
  6. Step 6: Final answer
    x = 255,877.04

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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.