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Finding the Fourth Proportional to 245,100.60, 367,650.90 and 139,930.20

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Solution

The fourth proportional to 245,100.60, 367,650.90 and 139,930.20 is: 209,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,100.60 : 367,650.90 = 139,930.20 : x
  2. Step 2: Convert to fraction form
    245,100.60/367,650.90 = 139,930.20/x
  3. Step 3: Cross multiply
    245,100.60x = 367,650.90 × 139,930.20
  4. Step 4: Simplify right side
    245,100.60x = 51,445,463,967.18
  5. Step 5: Solve for x
    x = 51,445,463,967.18/245,100.60
  6. Step 6: Final answer
    x = 209,895.30

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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.