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Finding the Fourth Proportional to 313,491.20, 470,438.40 and 173,350.40

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Solution

The fourth proportional to 313,491.20, 470,438.40 and 173,350.40 is: 260,137.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,491.20 : 470,438.40 = 173,350.40 : x
  2. Step 2: Convert to fraction form
    313,491.20/470,438.40 = 173,350.40/x
  3. Step 3: Cross multiply
    313,491.20x = 470,438.40 × 173,350.40
  4. Step 4: Simplify right side
    313,491.20x = 81,550,684,815.36
  5. Step 5: Solve for x
    x = 81,550,684,815.36/313,491.20
  6. Step 6: Final answer
    x = 260,137.08

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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.