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Finding the Fourth Proportional to 280,767, 421,030.62 and 162,519.96

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Solution

The fourth proportional to 280,767, 421,030.62 and 162,519.96 is: 243,710.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,767 : 421,030.62 = 162,519.96 : x
  2. Step 2: Convert to fraction form
    280,767/421,030.62 = 162,519.96/x
  3. Step 3: Cross multiply
    280,767x = 421,030.62 × 162,519.96
  4. Step 4: Simplify right side
    280,767x = 68,425,879,521.18
  5. Step 5: Solve for x
    x = 68,425,879,521.18/280,767
  6. Step 6: Final answer
    x = 243,710.55

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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.