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Finding the Fourth Proportional to 320,357.52, 480,503.52 and 83,669.52

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Solution

The fourth proportional to 320,357.52, 480,503.52 and 83,669.52 is: 125,495.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,357.52 : 480,503.52 = 83,669.52 : x
  2. Step 2: Convert to fraction form
    320,357.52/480,503.52 = 83,669.52/x
  3. Step 3: Cross multiply
    320,357.52x = 480,503.52 × 83,669.52
  4. Step 4: Simplify right side
    320,357.52x = 40,203,498,876.71
  5. Step 5: Solve for x
    x = 40,203,498,876.71/320,357.52
  6. Step 6: Final answer
    x = 125,495.72

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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.