Home / 315,766.20-473,649.30-289,961.40

Finding the Fourth Proportional to 315,766.20, 473,649.30 and 289,961.40

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Solution

The fourth proportional to 315,766.20, 473,649.30 and 289,961.40 is: 434,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,766.20 : 473,649.30 = 289,961.40 : x
  2. Step 2: Convert to fraction form
    315,766.20/473,649.30 = 289,961.40/x
  3. Step 3: Cross multiply
    315,766.20x = 473,649.30 × 289,961.40
  4. Step 4: Simplify right side
    315,766.20x = 137,340,014,137.02
  5. Step 5: Solve for x
    x = 137,340,014,137.02/315,766.20
  6. Step 6: Final answer
    x = 434,942.10

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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.