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Finding the Fourth Proportional to 807,169.32, 1,210,768.56 and 208,143

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Solution

The fourth proportional to 807,169.32, 1,210,768.56 and 208,143 is: 312,218.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,169.32 : 1,210,768.56 = 208,143 : x
  2. Step 2: Convert to fraction form
    807,169.32/1,210,768.56 = 208,143/x
  3. Step 3: Cross multiply
    807,169.32x = 1,210,768.56 × 208,143
  4. Step 4: Simplify right side
    807,169.32x = 252,013,000,384.08
  5. Step 5: Solve for x
    x = 252,013,000,384.08/807,169.32
  6. Step 6: Final answer
    x = 312,218.26

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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.