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Finding the Fourth Proportional to 370,763.86, 511,658.16 and 217,808.50

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Solution

The fourth proportional to 370,763.86, 511,658.16 and 217,808.50 is: 300,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,763.86 : 511,658.16 = 217,808.50 : x
  2. Step 2: Convert to fraction form
    370,763.86/511,658.16 = 217,808.50/x
  3. Step 3: Cross multiply
    370,763.86x = 511,658.16 × 217,808.50
  4. Step 4: Simplify right side
    370,763.86x = 111,443,496,614.62
  5. Step 5: Solve for x
    x = 111,443,496,614.62/370,763.86
  6. Step 6: Final answer
    x = 300,578.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.