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Finding the Fourth Proportional to 313,963.80, 470,772.90 and 103,493.40

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Solution

The fourth proportional to 313,963.80, 470,772.90 and 103,493.40 is: 155,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,963.80 : 470,772.90 = 103,493.40 : x
  2. Step 2: Convert to fraction form
    313,963.80/470,772.90 = 103,493.40/x
  3. Step 3: Cross multiply
    313,963.80x = 470,772.90 × 103,493.40
  4. Step 4: Simplify right side
    313,963.80x = 48,721,888,048.86
  5. Step 5: Solve for x
    x = 48,721,888,048.86/313,963.80
  6. Step 6: Final answer
    x = 155,183.14

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1.5x scale

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.