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Finding the Fourth Proportional to 303,581.83, 455,359.24 and 103,920.07

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Solution

The fourth proportional to 303,581.83, 455,359.24 and 103,920.07 is: 155,875.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,581.83 : 455,359.24 = 103,920.07 : x
  2. Step 2: Convert to fraction form
    303,581.83/455,359.24 = 103,920.07/x
  3. Step 3: Cross multiply
    303,581.83x = 455,359.24 × 103,920.07
  4. Step 4: Simplify right side
    303,581.83x = 47,320,964,095.95
  5. Step 5: Solve for x
    x = 47,320,964,095.95/303,581.83
  6. Step 6: Final answer
    x = 155,875.48

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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.