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Finding the Fourth Proportional to 303,428.68, 455,002.16 and 177,105.40

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Solution

The fourth proportional to 303,428.68, 455,002.16 and 177,105.40 is: 265,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,428.68 : 455,002.16 = 177,105.40 : x
  2. Step 2: Convert to fraction form
    303,428.68/455,002.16 = 177,105.40/x
  3. Step 3: Cross multiply
    303,428.68x = 455,002.16 × 177,105.40
  4. Step 4: Simplify right side
    303,428.68x = 80,583,339,547.66
  5. Step 5: Solve for x
    x = 80,583,339,547.66/303,428.68
  6. Step 6: Final answer
    x = 265,575.88

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1.5x scale

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.