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Finding the Fourth Proportional to 313,378.80, 470,143.80 and 103,005.60

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Solution

The fourth proportional to 313,378.80, 470,143.80 and 103,005.60 is: 154,533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,378.80 : 470,143.80 = 103,005.60 : x
  2. Step 2: Convert to fraction form
    313,378.80/470,143.80 = 103,005.60/x
  3. Step 3: Cross multiply
    313,378.80x = 470,143.80 × 103,005.60
  4. Step 4: Simplify right side
    313,378.80x = 48,427,444,205.28
  5. Step 5: Solve for x
    x = 48,427,444,205.28/313,378.80
  6. Step 6: Final answer
    x = 154,533.25

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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.