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Finding the Fourth Proportional to 771,808.65, 1,157,712.98 and 210,843.15

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Solution

The fourth proportional to 771,808.65, 1,157,712.98 and 210,843.15 is: 316,264.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,808.65 : 1,157,712.98 = 210,843.15 : x
  2. Step 2: Convert to fraction form
    771,808.65/1,157,712.98 = 210,843.15/x
  3. Step 3: Cross multiply
    771,808.65x = 1,157,712.98 × 210,843.15
  4. Step 4: Simplify right side
    771,808.65x = 244,095,850,444.87
  5. Step 5: Solve for x
    x = 244,095,850,444.87/771,808.65
  6. Step 6: Final answer
    x = 316,264.73

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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.