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Finding the Fourth Proportional to 313,362.20, 470,043.30 and 238,712.60

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Solution

The fourth proportional to 313,362.20, 470,043.30 and 238,712.60 is: 358,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,362.20 : 470,043.30 = 238,712.60 : x
  2. Step 2: Convert to fraction form
    313,362.20/470,043.30 = 238,712.60/x
  3. Step 3: Cross multiply
    313,362.20x = 470,043.30 × 238,712.60
  4. Step 4: Simplify right side
    313,362.20x = 112,205,258,255.58
  5. Step 5: Solve for x
    x = 112,205,258,255.58/313,362.20
  6. Step 6: Final answer
    x = 358,068.90

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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.