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Finding the Fourth Proportional to 303,990.84, 455,975.28 and 93,623.40

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Solution

The fourth proportional to 303,990.84, 455,975.28 and 93,623.40 is: 140,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,990.84 : 455,975.28 = 93,623.40 : x
  2. Step 2: Convert to fraction form
    303,990.84/455,975.28 = 93,623.40/x
  3. Step 3: Cross multiply
    303,990.84x = 455,975.28 × 93,623.40
  4. Step 4: Simplify right side
    303,990.84x = 42,689,956,029.55
  5. Step 5: Solve for x
    x = 42,689,956,029.55/303,990.84
  6. Step 6: Final answer
    x = 140,431.72

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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.