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Finding the Fourth Proportional to 303,343.62, 455,068.84 and 103,617.20

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Solution

The fourth proportional to 303,343.62, 455,068.84 and 103,617.20 is: 155,444.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,343.62 : 455,068.84 = 103,617.20 : x
  2. Step 2: Convert to fraction form
    303,343.62/455,068.84 = 103,617.20/x
  3. Step 3: Cross multiply
    303,343.62x = 455,068.84 × 103,617.20
  4. Step 4: Simplify right side
    303,343.62x = 47,152,959,008.05
  5. Step 5: Solve for x
    x = 47,152,959,008.05/303,343.62
  6. Step 6: Final answer
    x = 155,444.04

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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.