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Finding the Fourth Proportional to 370,354.87, 555,765.83 and 145,686.11

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Solution

The fourth proportional to 370,354.87, 555,765.83 and 145,686.11 is: 218,621.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,354.87 : 555,765.83 = 145,686.11 : x
  2. Step 2: Convert to fraction form
    370,354.87/555,765.83 = 145,686.11/x
  3. Step 3: Cross multiply
    370,354.87x = 555,765.83 × 145,686.11
  4. Step 4: Simplify right side
    370,354.87x = 80,967,361,843.62
  5. Step 5: Solve for x
    x = 80,967,361,843.62/370,354.87
  6. Step 6: Final answer
    x = 218,621.03

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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.