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Finding the Fourth Proportional to 303,435.80, 455,153.70 and 103,762.70

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Solution

The fourth proportional to 303,435.80, 455,153.70 and 103,762.70 is: 155,644.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,435.80 : 455,153.70 = 103,762.70 : x
  2. Step 2: Convert to fraction form
    303,435.80/455,153.70 = 103,762.70/x
  3. Step 3: Cross multiply
    303,435.80x = 455,153.70 × 103,762.70
  4. Step 4: Simplify right side
    303,435.80x = 47,227,976,826.99
  5. Step 5: Solve for x
    x = 47,227,976,826.99/303,435.80
  6. Step 6: Final answer
    x = 155,644.05

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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.