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Finding the Fourth Proportional to 551,145.80, 826,718.70 and 177,206.60

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Solution

The fourth proportional to 551,145.80, 826,718.70 and 177,206.60 is: 265,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,145.80 : 826,718.70 = 177,206.60 : x
  2. Step 2: Convert to fraction form
    551,145.80/826,718.70 = 177,206.60/x
  3. Step 3: Cross multiply
    551,145.80x = 826,718.70 × 177,206.60
  4. Step 4: Simplify right side
    551,145.80x = 146,500,009,983.42
  5. Step 5: Solve for x
    x = 146,500,009,983.42/551,145.80
  6. Step 6: Final answer
    x = 265,809.90

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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.