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Finding the Fourth Proportional to 148,430.60, 222,645.90 and 131,323.40

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Solution

The fourth proportional to 148,430.60, 222,645.90 and 131,323.40 is: 196,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,430.60 : 222,645.90 = 131,323.40 : x
  2. Step 2: Convert to fraction form
    148,430.60/222,645.90 = 131,323.40/x
  3. Step 3: Cross multiply
    148,430.60x = 222,645.90 × 131,323.40
  4. Step 4: Simplify right side
    148,430.60x = 29,238,616,584.06
  5. Step 5: Solve for x
    x = 29,238,616,584.06/148,430.60
  6. Step 6: Final answer
    x = 196,985.10

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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.