Home / 303,926.80-455,890.20-289,411.60

Finding the Fourth Proportional to 303,926.80, 455,890.20 and 289,411.60

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Solution

The fourth proportional to 303,926.80, 455,890.20 and 289,411.60 is: 434,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,926.80 : 455,890.20 = 289,411.60 : x
  2. Step 2: Convert to fraction form
    303,926.80/455,890.20 = 289,411.60/x
  3. Step 3: Cross multiply
    303,926.80x = 455,890.20 × 289,411.60
  4. Step 4: Simplify right side
    303,926.80x = 131,939,912,206.32
  5. Step 5: Solve for x
    x = 131,939,912,206.32/303,926.80
  6. Step 6: Final answer
    x = 434,117.40

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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.