Home / 305,078.45-457,565.64-80,441.08

Finding the Fourth Proportional to 305,078.45, 457,565.64 and 80,441.08

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Solution

The fourth proportional to 305,078.45, 457,565.64 and 80,441.08 is: 120,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,078.45 : 457,565.64 = 80,441.08 : x
  2. Step 2: Convert to fraction form
    305,078.45/457,565.64 = 80,441.08/x
  3. Step 3: Cross multiply
    305,078.45x = 457,565.64 × 80,441.08
  4. Step 4: Simplify right side
    305,078.45x = 36,807,075,833.21
  5. Step 5: Solve for x
    x = 36,807,075,833.21/305,078.45
  6. Step 6: Final answer
    x = 120,647.90

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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.