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Finding the Fourth Proportional to 404,631.80, 607,638.90 and 218,007.80

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Solution

The fourth proportional to 404,631.80, 607,638.90 and 218,007.80 is: 327,384.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,631.80 : 607,638.90 = 218,007.80 : x
  2. Step 2: Convert to fraction form
    404,631.80/607,638.90 = 218,007.80/x
  3. Step 3: Cross multiply
    404,631.80x = 607,638.90 × 218,007.80
  4. Step 4: Simplify right side
    404,631.80x = 132,470,019,783.42
  5. Step 5: Solve for x
    x = 132,470,019,783.42/404,631.80
  6. Step 6: Final answer
    x = 327,384.11

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1.5x scale

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.