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Finding the Fourth Proportional to 320,475.99, 480,677.27 and 83,841.51

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Solution

The fourth proportional to 320,475.99, 480,677.27 and 83,841.51 is: 125,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,475.99 : 480,677.27 = 83,841.51 : x
  2. Step 2: Convert to fraction form
    320,475.99/480,677.27 = 83,841.51/x
  3. Step 3: Cross multiply
    320,475.99x = 480,677.27 × 83,841.51
  4. Step 4: Simplify right side
    320,475.99x = 40,300,707,720.27
  5. Step 5: Solve for x
    x = 40,300,707,720.27/320,475.99
  6. Step 6: Final answer
    x = 125,752.66

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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.