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Finding the Fourth Proportional to 585,820.80, 879,076.80 and 211,795.20

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Solution

The fourth proportional to 585,820.80, 879,076.80 and 211,795.20 is: 317,817.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,820.80 : 879,076.80 = 211,795.20 : x
  2. Step 2: Convert to fraction form
    585,820.80/879,076.80 = 211,795.20/x
  3. Step 3: Cross multiply
    585,820.80x = 879,076.80 × 211,795.20
  4. Step 4: Simplify right side
    585,820.80x = 186,184,246,671.36
  5. Step 5: Solve for x
    x = 186,184,246,671.36/585,820.80
  6. Step 6: Final answer
    x = 317,817.75

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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.