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Finding the Fourth Proportional to 304,868.80, 457,303.20 and 262,878.40

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Solution

The fourth proportional to 304,868.80, 457,303.20 and 262,878.40 is: 394,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,868.80 : 457,303.20 = 262,878.40 : x
  2. Step 2: Convert to fraction form
    304,868.80/457,303.20 = 262,878.40/x
  3. Step 3: Cross multiply
    304,868.80x = 457,303.20 × 262,878.40
  4. Step 4: Simplify right side
    304,868.80x = 120,215,133,530.88
  5. Step 5: Solve for x
    x = 120,215,133,530.88/304,868.80
  6. Step 6: Final answer
    x = 394,317.60

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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.