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Finding the Fourth Proportional to 323,780.10, 485,670.15 and 304,080.90

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Solution

The fourth proportional to 323,780.10, 485,670.15 and 304,080.90 is: 456,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,780.10 : 485,670.15 = 304,080.90 : x
  2. Step 2: Convert to fraction form
    323,780.10/485,670.15 = 304,080.90/x
  3. Step 3: Cross multiply
    323,780.10x = 485,670.15 × 304,080.90
  4. Step 4: Simplify right side
    323,780.10x = 147,683,016,315.14
  5. Step 5: Solve for x
    x = 147,683,016,315.14/323,780.10
  6. Step 6: Final answer
    x = 456,121.35

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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.